I was sorting through a large mixed flock of Brown-headed Cowbirds and European Starlings at Fort Tilden on Friday morning when Isaac Grant, the intrepid Staten Island birder, showed up and asked if I…
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Qwerty is right, its a brown headed cowbird. Bird on the right appears to be a female brown headed cowbird.
Edit- Also, for the op, albinism and leucism are different, eye colour is a good feature to note when trying to distinguish whether a bird is albino or leucistic.
Leucism & albinism