Eastern Phoebe nest
This nest was built in the rafters of 1 of the bird observation blinds at Great Swamp. I was expecting to observe birds from the blind, not in the blind! But I saw some droppings on the floor, looked up, & saw these. I'm pretty sure they are Eastern Phoebes, since those love nesting in human structures, & there was an adult hanging around right outside the blind. The adult didn't seem agitated -- I thought it was just going about its business catching flies, until I discovered the nest. And the nestlings were quiet as a mouse while we were there. However, as I lifted the camera towards the nest to take the picture, they started to gape for me. Apparently it's a generic reflex towards anything approaching. We vacated the premises thereafter to let the parents get back to parenting.