21-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - BROWN CRESTED FLYCATCHER (Myiarchus tyrannulus)

The brown-crested flycatcher (Myiarchus tyrannulus) is a passerine bird in the tyrant flycatcher family.

Adult brown-crested flycatchers are probably the largest species of the Myiarchus flycatchers but vary considerably in size across their range, those in M. t. tyrannulus averaging rather smaller than the largest which are M. t. magister. They vary in length from 18 to 24 cm (7.1 to 9.4 in), averaging around 20.3 cm (8.0 in) long, and usually average somewhere between 30 and 45 g (1.1 and 1.6 oz), with extreme weighs from around 21 to 50 g (0.74 to 1.76 oz). Brown-crested flycatchers have heavy bills. The upperparts are olive brown, with a darker head and short crest. The breast is grey and the belly is lemon yellow. The brown tail feathers have rufous inner webs, the remiges have rufous outer webs, and there are two dull wing bars. The sexes are similar.

The brown-crested flycatcher is best separated from other confusingly similar Myiarchus species by its call, a rough loud "come HERE, come HERE" or "whit-will-do, whit-will-do".