Nest of an eared grebe, uncovered.

Nest of an eared grebe, uncovered.

Four young western robins, two on edge of nest and two on fir bough. Image note: plate thin.

Cassin’s vireo on nest. Image note: clear but small.

Cassin’s vireo on nest. Image note: back view.

Irene Finley standing beside a Cassin's vireo in its nest.

Irene Finley standing beside a Cassin's vireo in its nest. Image note: very thin plate.

Adult black-crowned night heron on nest, looking to the side.

William L. Finley in the top of a sycamore tree photographing heron nests.

William L. Finley in a tree photographing a great blue heron nest. A young bird is perched on a branch nearby.