Miller (1955a:163) collected seven Flammulated Owls in the pines and
oaks at 7000 feet in Carboneras Canyon and said that these owls were
common there. Nos. 31600 and 31581 are suffused with cinnamoneous
pigmentation, but represent the grayish phase, as described by Ridgway
(1914:729). Van Hoose (1955:302) previously recorded Nos. 31600 and
31581 from Coahuila.
*_Bubo virginianus pallescens_ Stone.--_Specimens examined:_ total 2:
[Female] 32042 from 2 mi. S, 12 mi. E Nava, June 15, 1952;
measurements: wing, 367 mm.; tail, 233 mm.; culmen, 29 mm.; and [Male]
31677 from 1.5 mi. NE Las Margaritas, 3100 ft., May 31, 1954;
measurements: wing, 345 mm.; tail, 213 mm.; culmen, 26 mm.; testes, 8
mm. long.
Miller (1955a:164) took a male Great Horned Owl in the Sierra del
Carmen on April 22. Ridgway (1914:742) listed _B. v. pallescens_ from
Sabinas. Sutton and Burleigh (1939a:30) obtained a female "near San
Pedro" on January 29. Friedmann, Griscom, and Moore (1950:143) recorded
_B. v. pallescens_ from Coahuila on February 24, May 26, and June 10.
The record of _B. v. mayensis_ from Las Delicias (Amadon and Phillips,
1947:578) has been reidentified by Webster and Orr (1958:141) as _B. v.
pallescens_. Dickerman saw a Great Horned Owl in the Sierra del Pino on
May 12,1954.
*_Glaucidium gnoma californicum_ Sclater.--_Specimen examined:_ one,
[Male] 31582, from 20 mi. S Ocampo, 6500 ft., April 5, 1954, weight, 55
gms.
Concerning forms of Pygmy Owls, Miller (1955a:164) remarked that the
best distinguishing characters of _G. g. gnoma_ and _californicum_ are
tail length and wing length. The characters of No. 31582 (wing, 94 mm.;
tail, 69 mm.) are clearly those of _californicum_ and not those of
_gnoma_. Miller (_loc. cit._) remarked that he "encountered at least
five different individuals, chiefly in the pine-oak at 7000 feet" and
one in oaks and pinons at 5000 feet in Boquillas Canyon of the Sierra
del Carmen. The size of the testes (left, 9x5 mm.; right, 7x4 mm.) of
No. 31582 indicates good probability of breeding by the Pygmy Owl in
the State.
**_Micrathene whitneyi_ (Cooper).--Miller (1955a:164) heard the Elf Owl
at close range in oaks at 5000 feet in Boquillas Canyon of the Sierra
del Carmen on April 24.
**_Speotyto cunicularia hypugaea_ (Bonaparte).--_Specimens examined:_
total 3: [Female] 32043 from 3 mi. S, 9 mi. E Cuatro Cienegas, 2250
ft., June 30, 1952; [Male] 32653 from 6 mi. W San Antonio de las
Alazanas, July 5, 1955; and [Male] 31602 from 14 mi. W San Antonio de
las Alazanas, 6500 ft., January 7, 1954.
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