Yellow-billed Cacique vs Yellow-winged Blackbird

Yellow-billed Cacique

Amblycercus holosericeus

Medium70 gForest

Yellow-billed cacique males are about 21.5 cm (8.5 in) and females about 20.5 cm (8.1 in) long. Males of subspecies A. h. holosericeus and A. h. flavirostris weigh an average of 69 g (2.4 oz) and females 53 g (1.9 oz). Males of subspecies A. h. australis weigh an average of 50 g (1.8 oz) and females 47 g (1.7 oz). Adult males of all three subspecies are entirely black and females are a slightly slaty black. Both sexes have a pale yellow iris and gray legs and feet. Juveniles are duller than adults and have a dark iris. All subspecies have a long bill whose tip is chisel-shaped. Voice: Pairs of yellow-billed caciques duet. Males sing "a loud Teeer-purr'weeuur!-Teeer-purr'weeuur-Teeer-purr'weeuur-Teeer-purr'weeuur..." and females reply with a "long down-slurred whistle, followed by a harsh nasal chatter". Their call is "a husky, burry scolding". In the western lowlands of Ecuador males sing "a series of loud ringing whistled notes, e.g. pee!-pee!-peeo-peeo-peeo...".

ID text from Wikipedia, CC BY-SA 4.0

Recorded by Alfonso Auerbach · Call · Carretera hacia laguna El Pedregal, Honduras · CC0

Photo: Sebastián de Jesús Herrera Buenfil · CC BY 4.0

Yellow-winged Blackbird

Agelasticus thilius

Small32 gWetland

Male yellow-winged blackbirds average 17.9 cm (7.0 in) long. Males weigh an average of 33.5 g (1.2 oz) and females average about 29 g (1.0 oz). The species is sexually dimorphic. Adult males of the nominate subspecies are almost entirely black. Their marginal, lesser upperwing, and underwing coverts are yellow; the first two give the species its English name. Females have a dark brown crown, a wide buff supercilium, and dark brown ear coverts. The rest of their head and their upperparts are brown with wide dusky streaks and some chestnut edges on the lower scapulars and lower back. Voice: The yellow-winged blackbird's song varies among and within the subspecies. Males of the nominate subspecies and A. t. petersii sing variable "trills of 3–7 notes..., a whistled warble tréé-o-lay (or séé-you-there), and a similar warble ending with a strong nasal or buzzing tone (tree-o-láááy). The song of A. t. alticola is described as similar but less nasal. Both sexes make a sharp chep call.

ID text from Wikipedia, CC BY-SA 4.0

Photo: jotalillo · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Yellow-billed Cacique and Yellow-winged Blackbird.