10 T HE A’ U D°U BeOINT SB Ul Dele hai er 
Swainson’s Warbler, Limnothlypis swainson.. Singing males of this 
species have continued to be present in the area north of Pomona, Jackson 
Co., each summer from 1951 to 1957, with the possible exception of 1953 
(John William Hardy and Brewer). 
Bachman’s Warbler, Vermivora bachmanu. This species is included in 
the Check List on the basis of several sight records. There is, however, a 
possibility that a specimen exists. Ellen T. Smith stated (1941, Aud. Mag., 
138: 393) that an individual of this species was taken at Decatur in 1899. 
Unfortunately, Mrs. Smith cannot now remember her source of informa- 
tion, and I have been unable to find any other mention of such a specimen. 
Mourning Warbler, Oporornis philadelphia. Although the status as given 
in the Check List — regular but uncommon migrant — is substantially 
correct, George W. Cox has informed me that at least one instance of nest- 
ing has been recorded. This record is by Pitelka for La Grange Park, Cook 
Co., June 1935 (1959, Auk, 56: 481). 
Hoary Redpoll, Acanthis hornemannit. The Check List refers to Cory’s 
(1909, Field Mus. Nat. Hist. Publ. 131; 573-574) quotation of Ridgway 
(1889, Ornithology of Illinois: 232) mentioning specimens taken by Nelson 
“in the vicinity of Chicago,” but neglects to include Ridgway’s additional 
statement that the National Museum possesses specimens from Mount Car- 
roll, Carroll Co., collected by H. Shimer. 
Red Crossbill, Loxia curvirostra. One individual of this species was given 
to me by a Southern Illinois University student whose name I apparently 
failed to record. The bird, a female, was picked up dead in a pine planta- 
tion near Crab Orchard Lake, Williamson Co., on December 1, 1954. The 
specimen is temporarily in my possession (number NC 4). In view of this 
record, the Check List account should be altered to include occasional winter 
visitants in the southern one-third of the state. 
Lark Sparrow, Chondestes grammacus. James N. Layne saw two Lark 
Sparrows at the edge of an area of strip-mined land about five miles south- 
west of Pinckneyville, Perry Co., in July, 1954. On June 9, 1956, a few 
hundred yards from the location of this observation, I saw a pair of Lark 
Sparrows with newly fledged young. This record suggests that the species 
may be considered a summer resident throughout the state. 
White-winged Junco, Junco aikeni. This Great Plains species is not in- 
cluded in the Check List, although it was reported by David Seal and John 
Sheagren on a Christmas Count taken December 24, 1950, around Rock- 
ford, Winnebago Co. (1951, Aud. Field Notes, 5: 135). At least two addi- 
tional species have been reported from Illinois but are lacking from the 
Check List. These are the Sage Thrasher, Oreoscoptes montanus, and the 
Mountain Bluebird, Sialia currucoides (formerly S. arctica). Presumably, 
the authors have felt that Ridgway’s statement (1907, U.S. Natl. Mus. Bull. 
50, part IV: 145) that the supposed Mountain Bluebird was actually a 
discolored female Eastern Bluebird, S. sialis, and the decision of Clark and 
Nice (op. cit.: 31) to reject Dreuth’s sight record of the thrasher were 
sufficient grounds for excluding the two species from the Check List. The 
question arises as to whether a Hypothetical List might not be included in 
at least one edition of the Check List. Here could be placed such records as 
