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.

A Kaeding petrel nesting burrow opened up to show a single egg.

An egg of a petrel in situ.

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.

View of a sharp-tailed grouse nest and eggs. Note on envelope credits image to Alex Walker.

View of a sharp-tailed grouse nest and eggs. Image note: plate light struck. Note on envelope credits image to Alex Walker.