What characteristic of the feeding station setup might cause House Finches to avoid eating altogether, even if the seed quality is high?

Answer

The feeder is dominated by larger, more aggressive birds.

House Finches, being relatively small, may steer clear of feeding stations monopolized by larger species like Mourning Doves or Blue Jays due to competition.

What characteristic of the feeding station setup might cause House Finches to avoid eating altogether, even if the seed quality is high?
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