Nidification

In the last week, I’ve seen House Sparrow and Northern Cardinal nestlings, gaping mouths squawking. It’s late in the breeding season, but some birds, especially the non-migratory locals who started early, may be on their second brood of the year. This Rock Pigeon (Columba livia) is using a train station window-well for its cliff-face nest. As of yesterday, there was one egg.Most of our House Sparrows (Passer domesticus) nest in out of the way cavities, notably street lamps. But occasionally you come across their large, messy nests out in the open. Here’s one on the Green-Wood fence.