A rufous hummingbird in its nest in a thimbleberry bush in south Portland. Image note: front view.

An adult rufous hummingbird perched on the edge of its nest in a thimbleberry bush with mouth open and tail spread. Image note: side view.

An adult rufous hummingbird perched on the edge of its nest in a thimbleberry bush with wings down and tail spread. Image note: best plate.

A female rufous hummingbird on the edge of its nest in a thimbleberry bush in south Portland.

A rufous hummingbird sitting in its nest in a thimbleberry bush in south Portland.

Two rufous hummingbird skeletons in a nest.

Two rufous hummingbird skeletons in a nest.

Herman T. Bohlman climbing up to a great blue heron's nest, about 140 ft. high.

Herman T. Bohlman climbing up to a great blue heron's nest, about 140 ft. high.

A general view of a great blue heron colony. Image note: telephoto.