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The science behind a bird fallout…there’s an app for that!!!

Birding the Sioux Falls area in April and the first half of May was…sloooooooooooooowwwww. With the late cold weather and snow, and continued wet spring precipitation, there was certainly plenty of water around (and there still is). But shorebirds were very slow all spring near Sioux Falls (perhaps just spread out?). Sparrow migration was utterly spectacular in April, but other songbirds? Once the sparrows left, it seemed like there weren’t any other songbirds filling the void. Certainly not warblers, which were few and far between for much of May. With the South Dakota Ornithologist’s Union (SDOU) meeting in Brandon on May 17-19, and with an incredibly wet forecast, the prognosis for good birding wasn’t great.

And then a funny thing happened…songbird migration ended up being utterly spectacular that weekend. The birds seemed to have arrived overnight, with warblers galore, and plenty of other songbirds as well. I personally had a 20-warbler day that Saturday (the 18th), and that’s with me whiffing on a few species that others saw in the area. It was one of the best, if not the best, warbler and songbird days I’ve had here in the 20 years I’ve been birding.

So what happened? As a scientist, I say LET’S CHECK THE SCIENCE behind it! You know how they say “There’s an app for that?” Well there’s also typically a scientific explanation behind…everything, if you look hard enough. That’s certainly true in this case.

For one, let’s check the weather radar for the overnight period from Friday, May 17th through Saturday May 18th. The weather that Friday was cloudy and rainy, driven by a low pressure system and a slowly moving front moving northeastward out of Nebraska. With the system predicted to generally stall over our area for the weekend, the forecast was bleak.

May 17th, 2019 - Weather Map
Weather map on 6:00AM (CST) on Friday, May 17th, showing a stalled to slowly moving stationary front just to our south. The forecast was for the low pressure system in Colorado to slowly move northeastward, bring showers and thunderstorms to the region for Friday night and into the weekend.

The weather system did move northeasterly through the afternoon and evening, triggering storms both along the trailing warm front to the south through Nebraska and Kansas, as well as more unsettled weather wrapping around the low pressure system. Moderate to strong northeasterly winds were found behind the low pressure system, but in front of the low were southerly and southeasterly winds…including in the area around Sioux Falls. It took until daybreak for the low pressure system to reach the Sioux Falls area, basically sitting directly over the region. But from the previous evening through daybreak on May 18th, an area from Sioux Falls, southward into extreme eastern Nebraska and all of Iowa and Minnesota were subject to south and southeasterly winds.

Surface weather map at 6:00 AM CST, showing the low sitting almost directly over Sioux Falls. But all night long, the counter-clockwise winds around the low funneled southerly and southeasterly winds through an area from far eastern South Dakota, and eastward into Iowa and Minnesota.

Given how slow the migration had been all spring long, the birds had to be…somewhere. But where? How could science have explained the fallout of warblers and other birds that weekend? The weather map and the southeasterly winds provide one clue, but the other is provided by weather radar itself. Since the 1950s, it’s been understood that weather radar could potentially identify features in the sky other than the weather…and that includes birds. There’s even a term for it now…Radar Aeroecology. A 1956 paper by Bonham and Blake discussed the radar echoes provided by both birds and flying insects. While research continued in the decades since, it’s only recently that the information has been made available for a birder’s benefit.

The animated map below shows national-scale radar returns for the night of May 17th. The advancing low and front, and associated precipitation, can be seen as it moves out of Colorado, through Nebraska and into South Dakota. But what of the radar returns in the eastern half of the country? Those are birds…birds taking flight just after sunset to resume their spring migration northward. You can identify the “bloom” around each radar location shortly after sunset, with the blooms appearing east to west as the sun sets. Where are the heaviest migration “blooms”? Look at the radars lighting up after sunset in the Midwest…St. Louis…Des Moines…other radars in Missouri, Illinois, and Iowa depicting heavy densities of birds taking flight.

Radar loop from approximately 6:00 PM (CST) Friday, May 17th, 2019 through 6:00 AM Saturday, May 18th, 2019. The areas south and east of Sioux Falls show a clear, very strong signal representing heavy migration of birds taking flight that evening.

But how can we translate those radar echos to where the birds are moving? In recent years, Cornell University, in partnership with multiple academic institutions, have developed “BirdCast“. They have developed algorithms that use weather radar returns to quantify the density of birds, while using short-term weather forecasts to project likely movements. The resultant “BirdCast” provides a 1- to 3-day look on likely bird migration hotspots.

The animated map below provides a depiction of estimated bird migration traffic that night. Ahead of the advancing front, southerly and southeasterly winds were favorable for migration, particularly as large densities of birds were already stacked up from the previous days and weeks. Sioux Falls was on the western edge of this migration hotspot, a beneficiary of favorable weather patterns bringing in birds from Missouri, Iowa, and Minnesota.

Birdcast depiction of migration traffic rate (bird density) and directional movements, from about 6:00 pm Friday, May 17th, through 6:00 AM Saturday, May 18th. with northerly winds and lower bird densities in the western Great Plains, very little bird movement is noted. However, ahead of the advancing front, extremely high migration densities are noted from Missouri, Illinois, and Iowa radar sites, with southeasterly winds pushing them northwestward…towards Sioux Falls. The solid lines represent the advancing sunset (red) and sunrise (yellow).

The map below depicts the situation that occurred throughout much of the first half of May. Prevailing weather patterns and storms, along with the cool weather, kept birds stacked up to our south and east, with a very slow spring migration to this point in South Dakota. The week prior to the big Sioux Falls fallout, birds were so far south that the Houston area birders declared a “Lights Out” period from May 9th-12th to avoid confusing the mass of migrating birds. But they had a long ways to go to get to South Dakota.

Houston Audubon "Lights Out" for May 9-12
Image from the Houston Audubon site, calling for a “lights out” period from May 9th to 12th. Heavy migrations were predicted the week before the Sioux Falls fallout…but FAR to our south and east.

The result of the changing weather pattern…an absolutely spectacular weekend of birding in the Sioux Falls area the weekend of May 17-19, particularly as the forecast deluge mostly fizzled out. I admit that even I as a scientist was somewhat skeptical of the Cornell BirdCasts. But after the events of that weekend, count me as a firm believer!

Here are some photos of the spectacular birds of that weekend:

Scarlet Tanager - Piranga olivacea
Scarlet Tanager – May 18th, 2019 Good Earth State Park, South Dakota
Magnolia Warbler - Setophaga magnolia
Magnolia Warbler – May 18th, 2019 – Good Earth State Park, South Dakota
Henslow's Sparrow - Ammodramus henslowii
Henslow’s Sparrow – May 19th, 2019 – Newton Hills State Park, South Dakota. Great weekend of birding overall, AND a lifer? I’ll take it.
Great Crested Flycatcher - Myiarchus crinitus
Great Crested Flycatcher – May 18th, 2019 – Good Earth State Park, South Dakota. Flycatchers in general seemed almost non-existent, prior to this weekend.
Mourning Warbler May 18th, 2019 Good Earth State Park, South Dakota. Not a great photo, but Mourning Warblers are a species I see occasionally, some springs. On May 18th, I ran into probably a dozen at Good Earth State Park.

Spectacular Spring Birding – Minnehaha County

The last two days have been just spectacular for birding, and for bird photography. Both mornings, I went west of Sioux Falls before dawn, spending a lot of time around Wall Lake and the vicinity. Good numbers of birds, a wonderful variety, and some wonderfully cooperative subjects for the camera. It’s not often you get all three of those things in a birding trip. Here are some of the finds for the last 2 days:

Red-breasted Mergansers Courting - Mergus serrator

I don’t see Red-breasted Mergansers often around the Sioux Falls area, and usually just one or two. This weekend there were at least 11 hanging out together at Wall Lake. Unfortunately for the females, there were 7 males and only 4 females…the males were putting on QUITE the show for the females. They were some of the most active birds on the lake, with males chasing females, pausing to fight with each other or do this wonderful display behavior that I’ve never seen before. Given how active they were, given how large Wall Lake is, and given how difficult it can be to get close to a bird out on the main lake, I felt VERY fortunate that they spent quite a bit of time near the beach this morning, and I was able to capture the courting behavior. A bit more of a crop than I’d like, but I love this photo.

Common Loon - Gavia immer

Wall Lake is becoming semi-reliable for finding migrating Common Loons in the spring months, as it’s now been several years in a row where I’ve seen them there. This morning I hung out at the end of the point that sticks out into the lake, arriving at dawn, and staying an hour and a half. I was rewarded by wonderful views of many birds, but it’s ALWAYS wonderful when a gorgeous Common Loon in breeding plumage cruises around the corner and swims right in front of you (and your camera!).

Killdeer - Charadrius vociferus

I love the “off-season” at Wall Lake…the time of year when you can sit by the beach and have it all to yourself. Come summer, it’s not somewhere you’d even think about birding. But this time of year, when ice and snow cover the surrounding landscape and birds are looking for food, the sandy beach is a great place to bird. There were many birds near the beach today, with several looking for food right along the shore, such as this Killdeer.  If you are familiar with Wall Lake and the bit of foam that sometimes forms on the beach when there’s a north wind, this is what that foam turns into when it’s 20 degrees! Loved the bird next to the crystally ice.

Bonapaarte's Gull - Larus philadelphia

As always at this time of year, Wall Lake attracted a lot of gulls, primarily Ring-billed and Franklin’s, but I also saw a Herring Gull and 20 or so delicate little Bonaparte’s Gulls. Another bird prowling the “surf” line looking for food. About the only Bonaparte’s Gull I saw that wasn’t in full breeding plumage, but the others weren’t as cooperative for the camera.

American Robin - Turdus migratorius

I REALLY felt bad for the American Robins and other songbirds that were trying to find food this weekend, with a thick crust of ice covering most of the landscape. They were numerous along roadsides and anywhere else where even a bit of open ground was available. Here one hangs out on a branch at dawn at Wall Lake.

Rusty Blackbird - Euphagus carolinus

Three times this weekend I came across small groups of Rusty Blackbirds. I admit I often don’t scan the massive blackbird flocks, but while out on the peninsula at Wall Lake this morning, I kept hearing a squeaky call that I wasn’t familiar with, and then saw a lone Rusty Blackbird. Later this morning north of Wall Lake, I ran into a small group at a flooded field. Not a great photo, but not a species I’ve photographed much. And one that I generally struggle to differentiate from Brewer’s Blackbird when they’re in breeding plumage.

Double-crested Cormorant - Phalacrocorax auritus

Another common species, a Double-crested Cormorant, but I can’t help put trigger the shutter at any bird that flies in front of my camera. Do like the unique look of this one, thanks to a reflection of some buildings across the water at Wall lake.

Horned Grebe - Podiceps auritus

Until this weekend, I didn’t realize I had no photos of a Horned Grebe in full breeding plumage! Problem solved…there were actually many of these guys around Wall Lake the last 2 days. Most weren’t very cooperative, but I finally got one early this morning hanging out near the beach.

Hermit Thrush - Catharus guttatus

With all the snow and ice that was still around heading into this weekend, you kind of do a double take when you see some bird species, as they seem out of place given the weather. Hermit Thrush are always early spring arrivals though. There were a number of them the last 2 days in the Big Sioux Recreation Area near home.

Eastern Phoebe - Sayornis phoebe

Speaking of birds that look out of their element in this weather…one of the LAST things you expect to see when there’s so much snow and ice still around are flycatcher species. But like Hermit Thrush, Eastern Phoebes are early spring migrants. I saw this guy both yesterday and today along Wall Lake beach. Today thankfully things had melted some. Yesterday, he was really having a hard time finding anything other than snow and ice.

Killer Grizzlies, Ice Twisters, and more – Science, Nature, and other news

Killer Grizzlies, “Ice Twisters”, and more…Science, nature, and other news of the week. Click on each headline for the story itself.

Grizzly Bear - Ursus arctos

Taken this morning, A Grizzly Bear, lurking JUST outside the Brandon Valley Middle School attended by my son. STAY BRAVE, MY SON!! We finally have a leader…nay…a HERO…who will stand up for you and your fellow children.  No longer will you cower in fear each day at school, wondering if…wondering WHEN...the next child will be taken by a Grizzly Bear. Prepare for firearm training, my son! Soon you will be able to defend yourself!

Grizzly Bear Scourge Killing Thousands of American Children — With all the testimony this week of potential Trump Cabinet members, the most insightful, meaningful words of wisdom came from Betsy Devos, the woman who (shockingly) is about to lead the Department of Education.  When asked about her stance on guns in schools, Devos first deflected, stating that it should be a local choice.  When pushed, Devos spoke of the one issue that wasn’t discussed NEARLY enough during the fall campaign…the deadly scourge of Grizzly Bear attacks on our children at school.  Yes, that’s right folks, FINALLY we have a Trump Cabinet member who “gets it”, who understands the daily struggles of everyday Americans. Who hasn’t worried about Grizzly Bear attacks when dropping off their child at school in the morning? Betsy, we love you.  You’ve proven you are one of US, everyday Americans struggling with everyday, life-or-death problems.  Hopefully under your watch, teachers, or…better yet…children THEMSELVES will be allowed to carry semi-automatic weapons to combat the Grizzly Bear scourge.  God bless you, Betsy Devos!

Cat toll on wildlife tallied – We had a neighbor with a cat that started showing up on their front step.  They adopted it, although for the much of the time, they kept it as an outdoor cat. Every night it would be out on its own, and often during the day as well.  It was a sweet cat! It was also an evil, bird-killing machine that was seemingly always in our yard. There would be many, many times I’d look out our sun room at the bird feeders, only to see the cat crouched and hiding by a nearby bush. Over the years, the visits to our yard became less frequent, either because 1) it was scared to death of me chasing it out of the yard again, or 2) it progressively got fatter and less agile.  He took a toll on birds in my yard.  I often witnessed him killing a bird, and other times, I’d just find the aftermath, with a pile of feathers or a dead mangled body. One cat, one yard, and likely many dozens upon dozens of kills.  So what is the toll of cats on wildlife?  As this story notes, a wildlife rehab group in Virginia tallied cat-related animal injuries over the years, and found they treated over 80 species that had been attacked by cats, including over 60 different bird species.  This past summer, the neighbor cat disappeared one day, as it didn’t return home after (yet another) night left outside on its own.  I love what pets bring into a home, but admit I was NOT fond of the way the neighbor cat was treated, and what it was allowed to do. Leaving it outside all the time ended up costing it its life, but it also ended up costing the lives of countless small critters over the years.

Tornado - 1884

What’s thought to be the world’s oldest photo of a tornado, taken in 1884. This photo always terrified me, ever since I saw it as a kid. It just looks…evil. And hey, GREAT! THANKS SCIENCE! In addition to every other way a tornado can kill you, now we also know that the inside of a funnel is quite cold! “Ice Twisters”, the SyFy movie, may have actually been a documentary!

Ice Twisters!! — Several weeks ago, my son and I were flipping through the channels, and as we passed the SyFy channel, we saw a movie called “Ice Twisters!” was on.  Typical SyFy movie…government research gone wrong, with drone-related atmospheric research somehow resulting in deadly “Ice Twisters” that were ravaging the landscape. In the movie, the cause of death for those impacted by an Ice Twister wasn’t necessarily wind…no…they froze to death!  Yes, twisters that were THAT cold!  Well, it turns out there’s a hint (the slightest hint) of truth in the show.  The story goes back to 1955, when three employees from a radio station in Nebraska were taking cover from a tornado in the basement of an old stone house. The vortex passed directly overhead, and as it did so, the structure above was blown away.  The three people in the basement noted the difficulty in breathing as the tornado passed overhead, but also felt the temperature dropping very sharply.  Researchers studying the case found that the temperature likely dropped from around 27° Celsius to 12° as the funnel went overhead.  The drop in temperature and the difficulty they had in breathing were related. The density of the air in the funnel would have been equivalent to being at nearly 30,000 feet in elevation, and as warmer, denser air is sucked into low pressure of the funnel, the expansion causes the large drop in temperature.  Touche’, SyFy, Touche’.  Never again will I make fun of your (admittedly sometimes entertaining) movies.  Ice Twisters was simply a movie ahead of its time, ahead of the science behind it.

Move over “Polar Vortex”! Now we have “Atmospheric Rivers” — I just love when the mainstream media gets excited and jumps all over a “new” scientific phenomenon. A few years ago, somebody put a label of “Polar Vortex” on the same kinds of cold snaps the U.S. has always experienced, evidently deciding that just calling it “winter” as we always have wasn’t exciting enough.  Today, I see we have a new entry in the journalistic annals of creating new and exciting ways to describe phenomena that have been around forever. A very significant precipitation event did just recently occur in California, but the same kind of event has occurred countless times throughout history.  The term “Atmospheric Rivers” itself is evidently old, mentioned by a couple of researchers back in the 1990s. Other terms for it in California have been the “Pineapple Express” or “Hawaiian Express”.  Reading this story, however, and you’d think it was the first time such a phenomenon had been discovered or discussed.

February 2016 Temperature Anomalies

An image that shows global temperature anomalies in February of 2016. February was the most “anomalous” month in history up to that point, with the greatest departure from the “normal” for any month that had ever been measured. 2016 as a whole ended up setting yet another global temperature record. Leading the way…much of the Arctic. This graphic shows a temperature anomaly of nearly 12° for much of Arctic, but even greater departures from normal were found this fall and early winter.

3rd straight year of record global temperatures — For the first time ever, we’ve now had three straight years where all-time global temperature records have been broken. As stated by Gavin Schmidt of the Goddard Institute for Space Studies, ““What’s going on in the Arctic is really very impressive; this year was ridiculously off the chart”. Parts of the Arctic were 20 to 30 degrees (Fahrenheit) above normal for much of the fall and early winter, including days with temperatures hovering at or above freezing even at the North Pole. Globally, levels of sea ice have never been lower.  Irrefutable evidence of the continued onslaught of climate change…not that more evidence is needed at this stage, but it comes at a time when a new incoming President and his Party are about to take power in Washington D.C.  Which leads into…

Mixed bag for Trump’s Cabinet on Climate Change — Not a single story, but a collection of stories related to confirmation hearings for Trump’s Cabinet members this week. First the good…incoming Secretary of the Interior, Ryan Zinke, openly disagreed with Trump’s statements on climate change.  He stated “The climate is changing, and man is an influence”, certainly welcome words from a man tasked to manage the Department that oversees Federal lands and natural resources.  Responses related to the issue of climate change were more reserved and mixed from other Trump nominees.  Scott Pruitt, tasked to lead the Environmental Protection Agency said “I do not believe climate change is a hoax”, but he stopped short of saying man was the major cause, or that we need regulation and change to mitigate the effects. Given that EPA is the Federal Agency that can potentially regulate greenhouse gas emissions, it’s not comforting to see a lack of conviction about regulatory action.  The aforementioned Betsy Devos, who could very well be in charge of the Department of Education (GOD I hope not), didn’t specifically comment on climate change in her confirmation hearing, but did offer a simple statement of “I support the teaching of great science“.  Note the word “simple”, a statement that could be attributed to MUCH of her testimony this week.  It’s not encouraging when the Secretary of Education is clearly not even aware of the many programs her agency is responsible for.  Rex Tillerson, an oilman slated to become Secretary of State, did state that the climate is changing and that greenhouse gases are a cause. However, he also stated that the science was murky, saying “The increase in the greenhouse gas concentrations in the atmosphere are having an effect. Our ability to predict that effect is very limited.”  Tillerson’s comments were perhaps the most representative of what’s likely to happen in a Trump administration.  In the face of overwhelming evidence that’s slowly convincing even a scientifically illiterate American public, the stance of many Cabinet members was to recognize climate change as “real”, yet simultaneously state the science is very uncertain. In short, they’re setting the stage to potentially monitor the situation, but not do a damn thing about it.

Sit on your butt and watch your life drain away — That’s the basic message of new research that assessed the biologic “age” of cells, related to the level of physical activity.  Telomeres, little caps on the ends of DNA strands within a cell, gradually shorten as a person ages. Telomeres protect your chromosomes, and a shortening of telomeres is associated with cell “aging”, and increased likelihood of diseases including diabetes and cancer. Interesting study, and one of the first to take this form of measurement and connect it with activity levels.  That’s the price of blogging, I guess…sitting here for hours trying to come up with interesting and clever stories, all while my damned telomeres shorten by the second.

Eating and Sitting

A family sitting AND eating at the same time. As science has proven this week, this could be one of the most dangerous aspects of American life. This, or rampaging Grizzly Bears around our children’s schools.

Don’t eat, live longer — To riff off of Charlton Heston…Damn you, science.  DAMN YOU ALL TO HELL!!  FIRST you have the story above about deadly Ice Twisters, amplifying my already well-ingrained fear of tornadoes.  Then you have the story of your DNA rotting away while you sit still.  And now, this story, noting that restricting calories is one way to ensure a longer life. Survival and health of rhesus monkeys was found to be significantly higher as caloric consumption was reduced.  Great.  What.  The.  Hell.  My favorite pastime is lounging on the couch in the basement, hiding from tornadoes, eating a bowl of ice cream.  Little did I know how much I was putting my life in danger. As a scientist, and as an avowed atheist, I do find it incredibly fascinating that so many things that human beings crave in life, are inherently bad for you.  Eating fatty and sugary foods, relaxing and taking it easy.  From an evolutionary and biologic standpoint, does that make sense?  Does it make sense that the very things we crave can kill us? How does simple biology explain that?  It’s times like this where my belief in a “god” may not be reinforced, but it does reinforce my belief in a “devil”.

10,000-km long “wave” on Venus — The Akatsuki spacecraft captured a spectacular image of Venus in December, marked by a massive, vertical “smile” that stretched nearly pole-to-pole.  The 10,000-km long feature is thought to be a “gravity wave”, which would make it the largest gravity wave observed in the solar system.  It’s thought to have developed from air movement over mountain ranges on the surface of Venus, with the feature then propagating higher into the thick Venetian atmosphere. However, such a feature isn’t easily explained by the current understanding of the surface of Venus and near-surface atmospheric conditions. Either some other explanation is in order, or our understanding of the surface/atmospheric interactions on Venus needs to be reevaluated.

 

Hurricane Alex, and what it all means for birds.

Photo of Western Meadowlark - Sturnella neglecta

I clearly remember the day I took this photo of a Western Meadowlark. It was in the winter of 2003, and it was damned cold at the time (10 below). It was a lone bird, huddling in a hay bale, and it was about the only Western Meadowlark I saw on that day. Just a dozen years later, during a day of birding the same location, I came across many hundreds of Western Meadowlarks.

It’s 17 below (F) this morning in the great white hell we call South Dakota..so of course global warming is on my mind!  We’ve got our own Hurricane Alex, in the form of a boy that can be a handful at times.  In the meantime, out in the Atlantic, a real Hurricane Alex formed this past week.  A hurricane?  Forming in January?  Since records were kept there have only been 4 hurricanes that have ever existed in the Atlantic in January, with only 2 that actually formed during that month.

It’s a year with a very strong El Nino, so some weather strangeness is to be expected, but Hurricane Alex certainly caught folks by surprise. There’s been plenty of other climate and weather abnormalities in the last several months.  On the East Coast, Christmas Eve brought temperatures up into the 70s, with Washington D.C. and New York City both hitting 71 for a high, while Norfolk, Virginia saw a downright balmy 82.  Overall, December was the warmest and wettest on record for the U.S.  The December strangeness wasn’t isolated to the U.S.  In Great Britain, records were shattered for precipitation for the month, while temperatures were nearly 7 degrees (F) above normal.  Daffodils were blooming Great Britain in December, a phenomenon that was also occurring across the U.S. East Coast.

Globally, 2015 provided a number of remarkable weather extremes.  Right before the new year, the temperature at the North Pole rose above freezing. Late December…North Pole…a place that hadn’t even seen the SUN for months…yet the temperature rose above freezing in an unprecedented event.  The year started with record breaking snows in the eastern U.S.  Record heat killed thousands in India and Pakistan.  Two tropical cyclones hit Yemen within one week..Yemen had never before been hit by a tropical cyclone of the magnitude of the first to hit. Seabirds in Alaska and elsewhere in the Pacific were dying in massive numbers due to hunger, most likely caused by El Nino and the climate weirdness.  Heat waves have been baking Australia recently after a year punctuated with both droughts and floods.

In any given year, there will always be weather extremes.  There will always be droughts, floods, severe storms, and heat waves.  However, weather and climate models are unequivocal in predicting a strong increase in weather extremes due to climate change.  Droughts will become longer and more severe.  Heavy precipitation events will increase, along with subsequent flooding.  Storm intensity will increase.  The models that predict these changes are now clearly being reinforced by actual empirical evidence.

Over the coarse of a human lifetime, simple observation can also reinforce the impacts of climate change, including from the aspect of being a birder.  There are already well known range expansions and contractions of species that are almost certainly tied to climate change in part, such as Northern Cardinal, Tufted Titmouse, Carolina Wren, and Red-bellied Woodpecker all shift in range to the north in recent decades.  Just from an observational standpoint, one trend I notice are more and more Western Meadowlarks staying in South Dakota to overwinter.  When I started birding over 15 years ago (just a heartbeat in terms of the climate change timeline), I would occasionally run across a single Western Meadowlark or perhaps a handful as I birded the grasslands in the central part of the state in winter.  It seems like every winter, that number rises.  On a recent birding trip to the Fort Pierre National Grasslands and areas just to the south, I came across hundreds of Western Meadowlarks over the course of the day.

Climate change?  It’s tough to attribute one short-duration phenomenon to climate change.  As I said, up until this point, it had been a relatively mild winter in terms of temperature, so perhaps you’d expect more Western Meadowlarks to hang around.  But it hasn’t just been a one-year event, it’s been a longer term, visible trend that I’ve noticed just through casual observation.

As a scientist, I admit I do find it fascinating to live through this particular period in time.  It’s amazing to watch these kinds of changes, and realize the incredible impact human beings have on the planet.  Fascinating…amazing…and also damned terrifying and outright depressing at times as well, know that what you’re observing is completely unnatural.

 

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