A red-winged blackbird nest and four eggs in the cat tails at Ladd's Pond, Sunnyside.

Four young red-winged blackbirds in nest with open mouths at Ladd's Pond, Sunnyside.

A red-winged blackbird nest and eggs in the cat tails at Ladd's Pond, Sunnyside. Image note: smaller size, negative broken and repaired.

A barn swallow nest and four eggs.

An Arkansas kingbird nest and eggs at the end of a gate. Note on envelope credits image to Olaus Murie.

A Pacific yellowthroat nest and eggs in the reeds.

A yellow eastern warbler nest and eggs.

A MacGillivray's warbler nest and eggs.

A MacGillivray's warbler nest and eggs.

A lutescent warbler nest and eggs.