Thick-billed Kingbird

The Thick-billed Kingbird, Tyrannus crassirostris, is a robust member of the Tyrannidae family, the tyrant flycatchers. It is a large bird, with adults reaching a length of approximately 23.5 cm (9.3 in). The upperparts of this species are a dusky olive-brown, while the underparts are a lighter shade, ranging from dull white to pale yellow. A distinctive feature is the large and stocky bill, which is quite pronounced compared to other kingbirds and serves as a key identification marker.

Identification Tips

When observing the Thick-billed Kingbird, look for its large, stout bill and the contrast between its olive-brown upperparts and lighter underparts. Although it possesses a yellow crown patch, this feature is often concealed and not readily visible. The tail is long and dark brown or black, which may assist in identification from a distance.

Habitat

This species is typically found in arid or semi-arid regions, favoring streamside riparian canyons or open areas near water. They show a particular affinity for the edges of sycamore woodlands.

Distribution

The Thick-billed Kingbird breeds in southeastern Arizona, extreme southwestern New Mexico, and northern Sonora, extending through the western and western-coastal ranges of Mexico to western Guatemala.

Behaviour

These birds are predominantly sedentary, maintaining territories throughout the year. However, individuals residing in the United States may migrate southward during winter months. They exhibit a hunting technique known as "hawking," where they perch openly, often high in the trees, and launch into flight to capture insects in the air.

Song & Calls

The vocalization of the Thick-billed Kingbird is a loud, whistled "pwaareeet," which can be heard across their habitat.

Breeding

Nesting occurs in tree branches, usually situated close to the trunk and above 6 meters in height. The female lays a clutch of three to five eggs.

Diet and Feeding

The Thick-billed Kingbird's diet consists primarily of insects, which it catches in flight from a high, open perch.

Conservation status

According to the IUCN Red List, the Thick-billed Kingbird is classified as Least Concern, indicating that it is not currently at significant risk of widespread decline.