Bluebird and Small Cavity Nester Conservation
Sialis - Bluebirds and other small cavity nesters
 
bluebirds

eggs

House Finch (HOFI) Nest, Egg and Young Photographs

Cavity nester photos of nests eggs and young

Cavity Nester Nests, Eggs and Young Photos and Bios. Also see Nest ID Matrix (contents) and Egg ID Matrix (color, spots, etc.)

Jerry Friedman photo of HOFI (House Finch) nest

Also see All About House Finches (nesting biology)

Nest description: twigs, grasses and debris. May be primarily of slender, dry stems with small leaves attached, lined with soft, wooly branch tips. May contain grass stems, plant fibers, leaves, rootlets, hairs, string and wool, lichens. Sometimes nest in wreaths on doors of houses - see photos. Not typically found in nestboxes, although they may use slot boxes and metal Purple Martin houses.

Eggs ypically oval, smooth shell, slight gloss, pale bluish white/green with sparing, delicate black (or dark brown or olive) spots/dots, speckles or streaks on the large end of the egg, forming a fine, loose ring. Occasionally eggs are unmarked. Length may vary. Eggs are typically laid in the early morning, with the first one a day or several days after nest construction ends.

House finch nestlings. Photo by Bet Zimmerman Newly hatched babies are naked except for fine, white down along feather tracts, with pinkish/yellowish looking skin, a yellow gape and red mouth lining. Bet Zimmerman photo.
HOFI nestling gaping. Photo by Bet Zimmerman

Notice the yellow gape with red mouth lining. Bet Zimmerman photo.

After nestlings are 5 days old, they defecate on the edges, creating a filthy mess, in a halo or wreath effect.

HOFI male. Ken Thomas photo Male House Finch. Ken Thomas (Wikimedia Commons) photo
HOFI female. Wikimedia Commons photo Female House Finch (Wikimedia Commons photo)
 

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Last updated March 24, 2016. Design by Chimalis.

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