s
seems to represent the subspecies _arizonae_. Dickerman saw four
Whip-poor-wills 20 mi. S Ocampo, 6000 feet, on April 4, 1954. The sizes
of the testes of Nos. 31449, 31028, and 31029 (13, 12, and 13 mm. long)
and an egg taken from No. 31450 indicate breeding by this species in
the State.

*_Phalaenoptilus nuttallii nuttallii_ (Audubon).--_Specimens examined:_
total 6: [Male] 31032 from 37 mi. S, 21 mi. E Boquillas, 4100 ft.,
March 12, 1952; [Male] 31446 and [Female] 31447 from Sierra del Pino
(=5 mi. S, 3 mi. W Acebuches), 6200 ft., May 13, 1954; [Male] [Male]
32048-32049 from 2 mi. S, 11 mi. E Nava, June 16, 1952; and [Female]
31033 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 26, 1952.

Miller (1955a:164) found the Poor-will common along the rocky canyon
walls up to 5000 feet in the Sierra del Carmen. Ridgway (1914:550)
recorded the Poor-will at Sabinas on May 21 and at Saltillo on May 6.
Van Tyne and Sutton (1937:39) stated that _P. n. nuttallii_ was not
common in the Big Bend Country of Texas; this probably is true for
northwestern Coahuila as well. The specimens from the Sierra del Pino,
collected by Dickerman in a pine-oak association at 6200 feet, were
taken near the upper limit of their range. Findley saw Poor-wills 2 mi.
W Jimenez, 850 feet, on June 19, 1952; 2 mi. S and 11 mi. E Nava, 810
feet, on June 15, 1952; and 2 mi. S and 3 mi. E San Juan de Sabinas on
June 22, 1952. Dickerman noted Poor-wills 16 mi. E and 18 mi. N Ocampo
on May 7, 1954, and 20 mi. S Ocampo, 6000 feet, on April 4, 1954.

The size of the testes (9x5 mm.) of No. 31446 and an enlarged oviduct
and an ovum (4 mm. in diameter) of No. 31447 indicate breeding by the
Poor-will in Coahuila.

**_Chordeiles minor howelli_ Oberholser.--_Specimen examined:_ one,
[Male] 31443, from 3 mi. N, 4 mi. E San Francisco (=25 mi. N Ocampo),
4850 ft., May 16, 1954.

Van Hoose (1955:302) wrote that nighthawks were heard and seen
frequently 3 mi. N and 4 mi. E San Francisco. Blake (1953:227) said
that the Common Nighthawk breeds in Sonora, Chihuahua, Tamaulipas, and
Durango; the size of the testes (7x4.5 mm.) of No. 31443 indicates the
possibility of breeding by this species in the State.

*_Chordeiles acutipennis texensis_ Lawrence.--_Specimens examined:_
total 4: [Male] 32044 and [Female] 32045 from 2 mi. W Jimenez, 850 ft.,
June 20, 1952; [Female] 31442 from 5 mi. N, 13 mi. E Ocampo, May 6,
1954; and [Male] 32046 from 2 mi. N, 1 mi. W Ocampo, 405