Black-capped Gnatcatcher vs Yucatan Gnatcatcher

Black-capped Gnatcatcher

Polioptila nigriceps

Tiny6 gShrubland

The black-capped gnatcatcher is 10 to 12 cm (3.9 to 4.7 in) long and weighs 5 to 8 g (0.18 to 0.28 oz). Adults are blue-gray on the upperparts with white underparts. They have a long slender bill and a long black tail with mostly white outer feathers. Males in alternate (breeding) plumage have a glossy black cap. The female's gray upperparts have less of a bluish tint but are otherwise similar to the non-breeding male. This species is very similar to the black-tailed gnatcatcher (P. melanura). Voice: The black-capped gnatcatcher's song is complex and rambling . It also has a "mewing" call that is sometimes repeated .

ID text from Wikipedia, CC BY-SA 4.0

Photo: Andy Reago & Chrissy McClarren · CC BY 2.0

Yucatan Gnatcatcher

Polioptila albiventris

6 gWoodland

The Yucatan gnatcatcher is 10 to 12 cm (3.9 to 4.7 in) long. Six males weighed 5.4 to 6.2 g (0.19 to 0.22 oz) and three females 5.0 to 5.7 g (0.18 to 0.20 oz). The female's upperparts are plumbeous gray from the crown to the rump. Its underparts are white with sometimes a pale grayish wash on the flanks. The tail's central feathers are black and each pair out from them are progressively more white until the all white outermost pair. It has a narrow white supercilium. The male's basic (non-breeding) plumage is essentially the same. Voice: The Yucatan gnatcatcher has two songs, a low-pitched nasal one and a higher-pitched clearer one. Both are in this recording: .

ID text from Wikipedia, CC BY-SA 4.0

Photo: Juan Cruzado Cortés · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Black-capped Gnatcatcher and Yucatan Gnatcatcher.