"The reason for their decline is a puzzle, although one suspect is the brown-headed cowbird, which lays its eggs in the nests ...

Martin said. “She’d see nests in different places, and she’d say, ‘Don’t touch it. Don’t touch it, because the mother might not want the birds, or you might knock it down accidentally.’” A cowbird ...

Martin said. "She'd see nests in different places, and she'd say, 'Don't touch it. Don't touch it, because the mother might ...