Manuscript detailing the basket net building habits of vireos and orioles. Additional birds are mentioned, but only for comparison. The document highlights the importance of imitation as a large influence on...

An adult Cassin's vireo at nest with young. Image note: young bird out of focus.

An adult Cassin's vireo at nest with young. Image note: young bird out of focus.

Manuscript describing a few bird types, including physical appearance, number of offspring, and habitat.

Cassin’s vireo on nest. A hand showing above.

William L. Finley feeding a Cassin’s vireo on its nest.

Irene Finley holding food above a Cassin’s vireo in its nest.

A warbling vireo on the edge of its nest in a sycamore tree.

Irene Finley with her finger on the back of a Cassin’s vireo.

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