Bluebirds habituate to human presence near feeders or nests primarily because of what learned association?

Answer

Association with a resource or safe nesting spot.

The habituation allowing observers close proximity stems from the bluebirds learning to associate specific people with reliable resources like food or a safe nesting location, rather than an inherent need for companionship.

Bluebirds habituate to human presence near feeders or nests primarily because of what learned association?
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