Flight: somewhat starlinglike shape ... other martins except the brown-chested. Female purple martin is the only species with contrasting gray collar on hind neck and pale forehead.

The Purple Martin Conservation Association provides ... Proximity to humans and a wide-open location and flight area will help protect the martins from predators," the PMCA said.

Purple martin populations have declined by a third in the last 50 years due to habitat loss, invasive species, and climate change. Conservation efforts, including providing nesting boxes ...