Top reasons bluebirds aren’t nesting in your nest box include an insufficient hole size, insufficient box size, using a birdhouse rather than a bluebird nest box, location, location amenities and competing species that take up a nest box preventing bluebirds from nesting.
Tag: bluebird
Bluebirds Mate for Life Socially, But Sexually – That’s Another Story
Bluebirds often socially mate for life. However bluebirds will also engage with others who they are not socially bonded to. Molecular studies have confirmed some bluebird nestlings are from another male, though percentages of how often this happens vary widely between studies.