Hand-colored, unmounted lantern slide of a barn swallow in its nest. Original negative: OrgLot369_FinleyA2360.

Unmounted lantern slide of a black-capped chickadee perched at its nest entrance on a stump. Original negative: OrgLot369_FinleyA2580.

Hand-colored, unmounted lantern slide of a Parkman’s wren perched on a stump with food in bill. Nest entrance showing below. Original negative: OrgLot369_FinleyA1566.

Unmounted lantern slide of a bluebird at its nest hole in an apple tree on the Jennings place. Original negative: OrgLot369_FinleyA1014.

Unmounted lantern slide of a bluebird at its nest hole in an apple tree on the Jennings place. Original negative: OrgLot369_FinleyA1014.

Two young robins in their nest facing opposite directions. Taken in Fulton Canyon.

Shefeldt's junco nest with four eggs. Note on envelope credits image to Alex Walker.

Shefeldt's junco nest with four eggs. Note on envelope credits image to Alex Walker.

Shefeldt's junco nest with four eggs. Note on envelope credits image to Alex Walker.

An adult Vigor's wren with food at the entrance to its nest on the side of a stump in Fulton Canyon.