DNA analysis of bluebird feces reveals benefits for vineyards

Do bluebirds nesting in California's vineyards help grape growers by eating agricultural pests, or hurt them by eating insects that are beneficial? The researchers behind a new study in The Auk: Ornithological Advances found ...

When young bluebirds don't leave the nest

For a young male western bluebird, it might be better to live with one's parents as a helper for a year before starting a nest of one's own, according to a new study in Behavioral Ecology.

Bluebirds struggle to find happiness on island paradise

Island plants and animals are often different from their mainland relatives. In general, the lack of top predators and large herbivores on isolated oceanic islands influences traits of island organisms. Consider, for example, ...