Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
_Egg dates._--Alberta: 19 records, May 20 to June 18; 10 records,
May 30 to June 11, indicating the height of the season.
California: 13 records, May 12 to June 21; 7 records, May 30 to
June 9.
Colorado: 19 records, May 27 to June 15; 10 records, June 4 to 12.
Illinois: 5 records, April 20 to June 3.
Nova Scotia: 14 records, May 28 to June 15; 7 records, June 5 to 10.
Oregon: 24 records, May 12 to June 12; 12 records, May 25 to June 2.
SPHYRAPICUS VARIUS NUCHALIS Baird
RED-NAPED SAPSUCKER
HABITS
The western race of the eastern yellow-bellied sapsucker occupies an
extensive range in the general region of the Rocky Mountains, chiefly
east of the Sierra Nevada and Cascade Ranges, from central British
Columbia and Alberta to western Texas and Arizona.
Ridgway (1914) gives a full description of this form, which is worth
quoting in view of his remarks as to its status; he describes it as--
Similar to _S. v. varius_, but with much less white on
back, this forming two definite but broken stripes,
converging posteriorly; nape always with more or less of
red, under parts less strongly tinged with yellow, and wing
and tail averaging decidedly longer; adult male with red
of throat more extended, both laterally and posteriorly,
covering malar region (except anterior portion), where
meeting white sub-auricular stripe; adult female with at
least lower half of throat red (sometimes whole throat red,
only the chin being white); young much darker above than
corresponding stage of _S. v. varius_, the pileum dark
sooty slate, white markings on back less brownish, and
under parts much less yellowish, the chest and foreneck
brownish gray or grayish brown (instead of buffy brown),
and usually less distinctly barred or lunulated with dusky.
On account of the conspicuous difference in coloration
of the young, definite difference in color pattern of
back, head, and neck in adults, and comparative rarity
of intermediate specimens (which are far less common,
relatively, than in the case of _Colaptes_), I believe that
it would be better to consider this form as specifically
distinct from _S. varius_. It is true that specimens do
occur that are intermediate between _S. nuchalis_ and _S.
varius_, as well as between the former and if _S. ruber_;
but they may be (and I believe they are) hybrids; certainly
there is no more reason for not considering them as such
than in the case of _Colaptes_; and if _S. nuchalis_ is to
be considered as merely a subspecies of _S. varius_ then,
most certainly, must _S. ruber_ also.
Mr. Ridgway (1877) says of its haunts:
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account