I'd bet you have goldfinches. Very pretty, and social. Hang a finch sock. You'll probably get house finches first, kind of drab but the males have red in breeding season. The squirrels don't seem to go after mine https://animals.mom.me/hang-finch-sock-9724.html https://www.bing.com/images/search?q=goldfinch&id=43B0D7048E1D2612A8C365D0E855C5FACDCD3468&FORM=IQFRBA