We used multivariate analysis to identify factors correlated with level of subcutaneous fat (a form of stored energy) in a migratory, wintering population of white-throated sparrows. Dominant birds, ...

Their most commonly-banded bird is the white-throated sparrow. Birdcast.info shows that by April 27, 45 million birds had crossed the region since early March.

Whether we love or hate the House Sparrow, it holds up a mirror to humanity, revealing important truths about the way we relate to nature and to each other. Human, Meet Sparrow The relationship ...