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The Sinaloa martin is 17 to 18.5 cm (6.7 to 7.3 in) long; three individuals weighed between 42 and 43.7 g (1.5 and 1.5 oz). The sexes are dimorphic; both have a slightly forked tail. Adult males are mostly glossy steel-blue. Their wings and tail are black with a bluish gloss. Their lower breast and belly are white and their undertail coverts white with dark spots. Females have duller blue upperparts than males and sometimes have gray-brown mottling there. Their face, throat, upper breast, and flanks are dusky brown though the middle of the throat is paler than the breast. Voice: The Sinaloa martin's vocalizations are similar to those of other Progne martins; for examples see here and here.
Text from Wikipedia, licensed CC BY-SA 4.0.
When to see the Sinaloa Martin
One bar for each month. Filled bars are the 6 months with records; pale bars are months with none. The wide bar is March, the month with the most records.
Where to see the Sinaloa Martin
The map shades 1 country with regular records. Everything unshaded has no records. Countries are listed below the map.
About the Sinaloa Martin
The Sinaloa martin is a Vulnerable species of bird in the family Hirundinidae, the swallows and martins. It breeds in Mexico; its wintering range is not known but is believed to be in South America. There is one record from Guatemala.
Text adapted from Wikipedia, licensed CC BY-SA 4.0.
Easily confused with
Peruvian MartinProgne murphyiThe Peruvian martin is 16.5 to 17 cm (6.5 to 6.7 in) long and weighs 30 to 37 g (1.1 to 1.3 oz).
Galapagos MartinProgne modestaThe Galapagos martin is about 15 cm (5.9 in) long.
Cuban MartinProgne cryptoleucaAdult Cuban martins are 18.5 cm in length, with a forked tail and relatively broad wings, and weigh 40 g.
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