Olivaceous Siskin
Spinus olivaceus
Fringillidae - Finches, Euphonias, and Allies
Spinus olivaceus
Fringillidae - Finches, Euphonias, and Allies
The Olivaceous Siskin occurs in humid montane forests along both slopes of the Ecuadorian Andes, typically between 1,000 and 2,800 meters, where it frequents forest edges, clearings, and secondary growth. It is generally uncommon but locally present, often seen in small flocks foraging for seeds and insects in the canopy and midstory, with males showing a distinctive yellow rump and wing markings. The species is listed as Least Concern by the IUCN, with a stable population across its Andean range, though it may be sensitive to habitat fragmentation. Natural history observations highlight its social behavior, high-pitched vocalizations, and cup-shaped nests built in concealed vegetation, with breeding activity peaking during the rainy season.