A resilient pair of internet-famous American bald eagles is at it again. Jackie and Shadow are currently incubating three ...

The largest bird in North America, the California condor most often nests in natural cavities along cliffs, including caves. However, they may also nest in large trees, such as the coast redwood.

The nest starts out only large enough to just fit the female but later must accommodate two babies as they grow. This is amazing planning. Primary cavity nesting birds are a group of birds that ...