My Favorite: Clearly not a species you're going to find in South Dakota! But they are a species I've seen multiple times on trips to Alaska.  All the photos below are from birds offshore from Seward Alaska. My favorite is the breeding plumage bird shown below, taken in May 2014.  While you can see Marbled Murrelets from shore near Seward, they typically aren't really close to land, or depart when someone approaches. This one was uncharacteristically cooperative!

Marbled Murrelet 1 (Breeding plumage)	Marbled Murrelet 2 (Non-breeding plumage)	Marbled Murrelet 3 (Breeding plumage)	Marbled Murrelet 4 (Breeding plumage)
Location: Near Seward, Alaska	Location: Near Seward, Alaska	Location: Near Seward, Alaska	Location: Near Seward, Alaska
Date: August 2010	Date: August 2010	Date: August 2010	Date: August 2010
Marbled Murrelet 5 (Breeding plumage)	Marbled Murrelet 6 (Breeding plumage)
Location: Near Seward, Alaska	Location: Near Seward, Alaska
Date: May 20th, 2014	Date: May 20th, 2014

Click here for the species description page for the Marbled Murrelet.