Mexican Cacique
Cassiculus melanicterus
Mexican cacique males average about 32 cm (13 in) long and females about 28 cm (11 in). Males weigh an average of about 96 g (3.4 oz) and females 70 g (2.5 oz). Adult males are mostly glossy black and have a long crest on the nape. Their lower back and uppertail coverts, most upperwing coverts, and crissum are yellow. Their tail is mostly black with yellow outer feathers. Adult females have a shorter crest than males. They have almost the same pattern as males but are a duller slaty black and their yellow tail feathers have olive edges. Voice: The Mexican cacique's song is variable; a common version has been written "krrow-krrow-kshárá-chee". Its calls are also variable and include "harsh electric chatters, bell-like screams, and clear whistles".
ID text from Wikipedia, CC BY-SA 4.0

Oriole Blackbird
Gymnomystax mexicanus
The oriole blackbird grows to a length of nearly 30 cm (12 in). The sexes are similar in appearance. The head, neck, shoulders and underparts are bright yellow; the back, wings, rump and tail are black, apart from the lower wing-coverts showing a strip of yellow. The eye is brown and is surrounded by a black eye ring, and the large bill and feet are blackish. The voice consists of several loud, scratchy calls, uttered from elevated perches or emitted when on the wing. One is a screech that resembles the sound made by a rusty hinge.
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Mexican Cacique and Oriole Blackbird.