Phrygilus is a genus of mainly Andean seed-eating tanagers commonly known as sierra finches. Phrygilos means finch in Ancient Greek. Sometimes classified in the bunting and American sparrow family Emberizidae, more recent studies have shown them to belong in the Thraupidae. The genus appears to be polyphyletic consisting of at least three distinct lineages which in future may need to be split into separate genera.
Group 1 - The "hooded" group. Related to yellow finches Sicalis
- Black-hooded sierra finch, Phrygilus atriceps
- Peruvian sierra finch, Phrygilus punensis
- Grey-hooded sierra finch, Phrygilus gayi
- Patagonian sierra finch, Phrygilus patagonicus
Group 2 - Upperparts mostly grey, underparts white. Sexes similar. Related to a clade containing both the "hooded" group and Sicalis olivascens
Group 3 - male plumage grey or dull brown, females streaky. Related to Haplospiza
Group 4 - Yellow bill with grey/black underparts.
- Band-tailed sierra finch, Phrygilus alaudinus - Related to yellow-billed blue finch, Porphyrospiza caerulescens
- Carbonated sierra finch, Phrygilus carbonarius
- Mourning sierra finch, Phrygilus fruticeti
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