[EBB Sightings] Chestnut-backed Chickadee nesting

This is really interesting and would appear to be extremely early.

 

In Birds of North America, Chestnut-backed Chickadee nesting dates are
reported as follows:

 

 "Egg dates for California March 12 - June 7. Height of season April 7 -
June 1."

 

 " In California at Tilden Park, Contra Costa Co., mean date of first egg
for P.r.barlowi over a 22 year period (n=430) March 25 +- 9 days."

 

   -Rusty Scalf

 

 

 

 

  _____  

From: sightings-bounces at diabloaudubon.com
[mailto:sightings-bounces at diabloaudubon.com] On Behalf Of
jlangewis at sbcglobal.net
Sent: Monday, March 08, 2010 3:20 PM
To: sightings at diabloaudubon.com
Subject: [EBB Sightings] Chestnut-backed Chickadee nesting

 

I installed a nestcam box on Jan 1 under the eaves of my house.
Chestnut-backed Chickadees started checking it out on Jan 13, and nest
construction started Feb 25.  I put wood chips in the box, which were
quickly cleaned out on 2/25, then redwood bark shreds were brought in, and a
circular shape was constructed.  I first saw 2 birds at once in the box on
Feb 27.  It was slow going until today, March 8, with construction full
speed ahead.  With the camera I am watching and hearing them on TV.  Other
materials include feathers and dog hair.  I will post progress.

 

Also, on my bike ride today Orange-crowned Warblers were singing along
Redwood Road, south of Pinehurst Road, the first ones I've heard this
Spring.  I have not yet detected an Allen's Hummingbird in my yard.  They
are usually here in late January or early February.  There was a Rufous
Hummingbird yesterday at my feeder.  Where's the Allen's?

 

There was a Yellow-rumped Warbler in my yard on Jan 2, the first in my yard,
I've been here in the Oakland hills for 19 years.  That was yard species
#92.

 

Johan Langewis

Oakland, near Skyline and Shepherd Canyon

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