Northern Beardless Tyrannulets

The Northern Beardless Tyrannulet, Camptostoma imberbe, belongs to the tyrant flycatcher family.

Northern Beardless Tyrannulet

Distribution / Habitat:

Its range includes the southeasternmost part of Arizona and Texas of the United States through Mexico and Central America to northwestern Costa Rica. Their preferred habitats are light forests or gardens with trees.

Breeding / Nesting:

Courthship behavior: the crests are raised, the tail flicked, and an excited call is made.

They pair build a domed nest by a tree fork using plant fibre or leaves, leaving a side entrance.

The hen usually lays two, white-colored eggs, which are marked with rufous and lilac mostly at the larger end.The eggs are incubated for 14 – 15 days. The fledglings leave the nest after about 17 days.

Distribution / Habitat:

Size: Length: 10.2 cm long; Weight: 7.5g.

Coloration: The head is dark brown with an erectile crest and pale supercilium (line above eye). The upperparts are grey-green becoming paler on the rump. The wings are brown with yellow feather-edging and two whitish wing bars.

The tail is brown, the throat grey, the breast yellowish, and the abdomen yellow. The bill is pinkish.

Males and females look alike, and this species always appears not as bright, especially with regard to the wing bars, than the closely related Southern Beardless Tyrannulet, C. obsoletum, with which it was once considered conspecific (of, or belonging to, the same species).

However, the two forms overlap without interbreeding in Costa Rica.

Distribution / Habitat:

The Northern Beardless Tyrannulets’ diet usually inlcude berries, spiders and insects.

Call / Song:

Its call is a loud whistled Fleeeeeerrr, sometimes broken up as a fleeer-it, or a flee-flee-flee-flee. When alarmed or in courtship, the crests are raised, the tail flicked, and an excited call is made.

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