Brown-crested Flycatcher
Myiarchus tyrannulus
The brown-crested flycatcher is 18 to 23 cm (7.1 to 9.1 in) long, with a general trend of larger to smaller from north to south. Subspecies M. t. magister is the largest taxon within the entire genus Myiarchus, weighing 36 to 54 g (1.3 to 1.9 oz). The other subspecies weigh 21 to 45 g (0.74 to 1.6 oz). The sexes have the same plumage. Adults of the subspecies M. t. magister and M. t. cooperi have a grayish brown crown whose feathers have darker shafts and form a bushy crest. Their upperparts are mostly light brownish gray to dark olive gray with often a rufous tinge on the uppertail coverts. Voice: The brown-crested flycatcher's dawn song varies somewhat among the subspecies but overall is "alternated renditions of isolated huits and complex phrases that are typically derived from combination of a whay-burg note with brief series of rapid huits".
ID text from Wikipedia, CC BY-SA 4.0
Great Crested Flycatcher
Myiarchus crinitus
Adult great crested flycatchers usually measure between 17–21 cm (6.7–8.3 in) in length with a wingspan of around 34 cm (13 in). This bird usually weighs between 27–40 g (0.95–1.41 oz). There is no sexual dimorphism. All adults are brownish on the upperparts with yellow underparts; they have a long rusty brown tail and a bushy crest. Their throat and breast are grey. Males will sing a three-part song composed of two short whistles: a wheerreep followed by a higher-pitched whee, and a soft low churr.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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