Breeding Birds in Saskatchewan Without Documented Nests

The design and function of birds' nests

All birds construct nests in which to lay eggs and/or raise offspring. Traditionally, it was thought that natural selection and the requirement to minimize the risk of predation determined the design of completed nests. However, it is becoming increasingly apparent that sexual selection also influences nest design. This is an important development as while species such as bowerbirds build struc...

Captive Breeding of Birds

Responses of Birds to Broken Eggs in Their Nests’

We tested the responses of two bird species which nest on unmovable substrates (e.g., cavities and walls) to simulated and actual egg damage in their nest. Tree Swallows (Tachvcineta bicolor) and Barn Swallows (Hit-undo ruiticaj removed broken eggs and continued to incubate the rest of their clutch, but rcsponse times took up to 8 days, and observed rejection rates were lower than reported for ...

Breeding Strategies of Tropical Birds

The Breeding Birds of Nebraska