The
Tropical Kingbird is a common bird of the tropics with a range that just
reaches the United States in southern Arizona, and recently, in southern
Texas. They are very similar to the Couch's Kingbird, and cannot
easily be differentiated from that species except by voice. They have
adapted well to a human presence, and given their preference for semi-open
habitats, their numbers have greatly increased upon clearing of tropical
forestlands. They have also learned to live in and around human
environments, such as suburban settings.
Habitat: In their small U.S. breeding range,
Tropical Kingbirds are most often found in riparian groves such as
cottonwoods along rivers and streams. In the rest of their tropical
range, they can be found in a variety of semi-open habitats, including
farmland, savannahs, open woodlands, and even suburban areas.
Diet: Feeds on insects and spiders, but has also
been known to eat fruits and berries, particularly in the more tropical
parts of its range.
Behavior: Forages by observing from a perch, and
flying out to capture insects in flight, or dropping down to the ground to
capture insects.
Nesting: The nest of a Tropical Kingbird is a cup
built of grasses, sticks, bark strips, weed stems, and other plant material,
lined with softer materials such as plant down and moss. The female
usually lays 3 or 4 eggs, and she alone incubates them. When the eggs
hatch, both parents help to feed the young. The young fledge after
about 18 days.
Song: Song of a Tropical Kingbird is a metallic,
rapid series of tinkling notes.
Migration: In most of their range, Tropical
Kingbirds are considered permanent residents. Those that breed in
Arizona, however, are only present during the summer breeding season,
although oddly, those that have bred in southern Texas have overwintered.
After the breeding season, young, first-year birds are known to wander, with
a handful found along the U.S. Pacific Coast every fall.