Carib Grackle
Quiscalus lugubris
Male Carib grackles average 26 cm (10 in) long and females about 22 cm (8.7 in). Males weigh 66 to 80 g (2.3 to 2.8 oz) and females 49 to 58 g (1.7 to 2.0 oz). Males of all subspecies have a long keel-shaped ("V") tail; females' tails are shorter and flat. Adult males of the nominate subspecies Q. l. lugubris are completely black with a violet gloss on most of the body; it is slightly less strong on the underparts. The gloss is more violet-blue on the wing coverts and greener on the flight feathers. Voice: The Carib grackle's song varies among the subspecies but is "generally a series of squeaky notes". In the Antilles its vocalization is generally "3-7 syllables with rising inflection" and also "whistles and chucks". On Martinique it makes "a descending, Molothrus-like whistle followed by a complex warble" and on Trinidad "a series of rhythmic rattles ending in metallic sound".
ID text from Wikipedia, CC BY-SA 4.0
Common Grackle
Quiscalus quiscula
Adult common grackles measure from 28 to 34 cm (11 to 13 in) in length, span 36–46 cm (14–18 in) across the wings, and weigh 74–142 g (2.6–5.0 oz). Common grackles are less sexually dimorphic than larger grackle species, but the differences between the sexes can still be noticeable. The male, which averages 122 g (4.3 oz), is larger than the female, at an average of 94 g (3.3 oz). Adults have a long, dark bill, pale yellowish eyes, and a long tail; their feathers appear black with purple, green, or blue iridescence on the head, and primarily bronze sheen in the body plumage.
ID text from Wikipedia, CC BY-SA 4.0
Learn this pair in BeakBrain
Photo and call practice, free in any browser.
Play BeakBrainPhotos and recordings are credited to their authors under the licence shown. Full profiles: Carib Grackle and Common Grackle.