Date: 12/21/20 4:51 am
From: Chris McCreedy <cristofolos...>
Subject: [AZNMbirds] [EXT]Rock Corral - Atascosa Highlands CBC section summary
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The deepening drought has taken its toll on the Rock Corral in the
Tumacacori Mountains west of Tubac. I counted the Corral for the Atascosa
Highlands CBC for the eighth year today. I recorded the lowest species
total I have observed since 2010, when I first began counting there. I
couldn't find any vireos, or sapsuckers, or warblers, or Empidonax
flycatchers, or raptors. It was the first time I have struck out for any of
those taxonomic groups, let alone all of them. Migrant sparrows were few
and far between. Black-capped Gnatcatcher numbers had been building to 10
each of the last two years, but I only could find two today.

Total birds / hour has ranged between 45 - 75 for this section of the CBC
during the years I counted it since 2011, but it was under 29 today.
Resident Canyon Towhees, Northern Cardinals, Bridled Titmice, Crissal
Thrashers, and Gila Woodpeckers have maintained their numbers for now,
likely helped by reasonably wet winter conditions and early nesting
phenology the previous year, prior to when dry conditions arrived and


Tucson AZ
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