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

eggs

Ash Throated Flycatcher Nest, Eggs and Young

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.)

ATFL nest. Photo by Zell Lundberg.

Ash-Throated Flycatcher photo by Zell Lundberg of Coaldale, CO.

Nest description: Messy, typically with rootlets, grass, weed stems, and dry cow or horse dung in the nests, and a cup lined with fine grass and matted hair/fur. Unlike Great Crested Flycatchers, they seldom add snakeskin to their nests.

Egg descripton: Eggs are oval, smooth, slightly glossy, creamy white to ivory, and sometimes pinkish white background color, heavily marked with fine or heavy streaks or blotches in browns, purples, and grays (fewer markings than GCFL eggs.)

ATFL nest. Photo by Zell Lundberg.
Left: This nest fills up about 1/4 of the box height. Something syntehtic and green was woven in the lower right corner. Below: A messy mess, with eggs in a "well." Photos by Zell Lundberg.
ATFL nest. Photo by Zell Lundberg.
ATFL egg. Photo by Zell Lundberg. ATFL egg relative to penny. This egg was buried deep in the nest and did not hatch. Not too many cavity nesters lay eggs wtih such scrawly pigment on them. Photo by Zell Lundberg.
ATFL eggs. Photo by Zell Lundberg. Photos by Zell Lundberg. Left: These eggs are being incubated. Below: Seven day old nestling. Only one nestling hatched in this batch.
ATFL nestling. photo by Zell Lundberg.
ATFL eggs and hatching.  Zell Lundberg photo One hatchling so far. Photo by Zell Lundberg.
ATFL nestlings 4 days old.  Zell Lundberg photo These ATFL nestlings are 4 days old. Photo by Zell Lundberg.
ATFL nestling, 14 days old. Zell Lundberg photo

A 14 day old ATFL nestling. Fecal sac on left. Tina noted the "Bart-Simpsonesque" crown feathers coming in, and light feathers on wings folded over back.

Tina heard the nestling tapping on the box as they walked away after taking the photo. It apparently fledged the next day (ATFL nestlings typically fledge 13-17 days after hatching), and the unhatched eggs were also missing (perhaps a chipmunk or other critter took them after the parents stopped guarding the box.) Photo by Zell Lundberg.


    A homeowner will take better care of bluebirds in a backyard box than a trail manager ever could.
    - Steve Garr, NABS 2006 conference


HOME | Basics | Resources | House Sparrows | House Wrens | Nest/Egg ID | Site Map and Search | Suet Recipes | Tree Swallows | Contact me Bluebird Conservation

May all your blues be birds!

If you experience problems with the website/find broken links/have suggestions/corrections, please contact me!
The purpose of this site is to share information with anyone interested in bluebird conservation.
Feel free to link to it (preferred as I update content regularly), or use text from it for personal or educational purposes, with a link back to http://www.sialis.org or a citation for the author.
No permission is granted for commercial use.
Appearance of automatically generated Google or other ads on this site does not constitute endorsement of any of those services or products!

Photo in header by Wendell Long.
© Original photographs are copyrighted, and may not be used without the express permission of the photographer. Please honor their copyright protection.
See disclaimer, necessitated by today's sadly litigious world.
Last updated March 24, 2016. Design by Chimalis.

Chimalis