The American goldfinch is gregarious during the non-breeding season, when it is often found in large flocks, usually with other finches. The social hierarchy, measured by how many aggressive encounters are won by each individual, tends towards the male being dominant in the non-breeding season. During the breeding season, this finch lives in loose colonies. While the nest is being constructed, the male will act aggressively toward other males who intrude into his territory, driving them away, and the female reacts in the same way toward other females. This aggressiveness subsides once the eggs have been laid. The social hierarchy in the breeding season generally has the female dominant over the male. Β Dominance may change based on the value of a resource; a study published in 1987 found that starved subordinate birds were sometimes dominant in competitions over feeder access.
Lovely photos! π
Thank you, Erwin. π
What a beautiful bird, such a lovely colour.
Thanks so much, Susan. π
You caught these goldfinches in the most beautifully bright moments, HJ, fantastic photos. I also appreciated the info.
Thank you very much, Jet. π
Interesting post HJ, I love the brilliant yellow of this bird.
That’s their breeding plumage. Thank you, Ashley. π
They make quite a lovely couple! Reminds me of the outrageously fashionable glamour couples you see gallivanting at horse races.
They do attract a lot of attention when they fly around. Thanks, D. π
Beautiful, HJ
Thanks, Chris. π
Lovely Photos!!!!!!
Thank you very much, B. π
Pretty shots, HJ! And yours is much lovelier than my AG!
Thank you very much, Donna. π
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Really good photos. I haven’t tried to take photos of birds, your photos inspire me.
Thank you very much, Ao. To photograph birds is a lot of fun but takes a lot of patience, too! π