A Yellow-bellied Siskin or an Andean Siskin (the females are very similar). At the time I wrote this I thought of the Andean Siskin as a paramo species, but at 2600 meters, HBW indicates Andean is more likely. Both are common on checklists at Rio Blanco. The pale front and possibly white vent, and overall paler yellow fit more with the HBW illustration of the Andean Siskin. I'll check my other photos after this trip before changing the ID.
Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)
