Olivaceous Siskin vs Yellow-rumped Siskin

Olivaceous Siskin

Spinus olivaceus

Tiny14 gForest

The adult male olivaceous siskin has a black face, head, nape, throat and upper breast. It has a narrow collar of yellow and the rest of the upper parts, apart from the yellow rump, are olive green streaked with black. The greater wing coverts have a yellow edge, and this, with the yellow bases to the flight feathers, form a yellow panel when the bird is in flight. Underparts are yellowish-green with a dull yellow lower breast and belly. The tail is brownish-black, with the bases of the outer feathers yellow.

ID text from Wikipedia, CC BY-SA 4.0

Photo: (c) Esteban Poveda, some rights reserved (CC BY), uploaded by Esteban Poveda · cc-by

Yellow-rumped Siskin

Spinus uropygialis

Tiny14 gShrubland

The yellow-rumped siskin is 12 to 14 cm (4.7 to 5.5 in) long; one individual weighed 14 g (0.49 oz). The species is sexually dimorphic but not dramatically so. Adult males have a sooty black head, neck, throat, and upper breast. Their back is sooty black, their rump bright yellow, and their uppertail coverts blackish with wide yellowish edges. Their tail is mostly black with wide yellow edges at the bases of the outer feathers. Their wings' greater coverts have wide yellow tips and the median coverts have small yellow tips. Voice: The yellow-rumped siskin's song is not well known, but is described as "a rich and melodious series of warbling phrases interspersed with twitters and trills" that is delivered more slowly than the songs of other siskins. Its call is "a nasal pheew".

ID text from Wikipedia, CC BY-SA 4.0

Photo: (c) Nicolas Olejnik, some rights reserved (CC BY), uploaded by Nicolas Olejnik · cc-by

Photos and recordings are credited to their authors under the licence shown. Full profiles: Olivaceous Siskin and Yellow-rumped Siskin.