184 THE CHICAGO ACADEMY OF SCIENCES. 



W. Butler, in his Birds of Indiana > reports it as having been found 

 at Chicago on April 27, 1896. In 1853-1854, Mr. Robert Kenni- 

 cott recorded this species in his list of Cook County birds,* as 

 "abundant" and also states that it was known to nest in the county 

 at that time. Mr. E. W. Nelson, in his Birds of Northeastern 

 Illinoisf says: "Rather common summer resident away from 

 the immediate vicinity of the Lake. Arrives the first of May and 

 departs the last of September." 



I am inclined to think that the birds found during the time of 

 Mr. Kennicott and Mr. Nelson would now be referred to Trog- 

 lodytes aedon parktnanii. 



The range of the House Wren covers the eastern United 

 States, west to Indiana, Illinois, Missouri and Texas, and from 

 Maine and southern Ontario southward to the Gulf of Mexico. 

 It breeds in the northern half of its range and winters in the 

 southern half. It is also said to breed in Florida. 



Troglodytes aedon parkmanii (Audubon). Western House Wren. 

 Troglodytes aedon NELSON, Bull. Essex. Inst., VIII, 1876, 97, 152. 

 Troglodytes aedon KENNICOTT, Trans. 111. Agric. Soc., I, 1855, 603. 

 Troglodytes parkmanii AUDUBON, Orn. Biog., V, 1839, 310. 

 Troglodytes cedon var. aztecus BAIBD, Review, Sept., 1864, 139. 



The Western House Wren is a not uncommon summer resi- 

 dent, arriving about the last of April, and departing in October. 

 This is unquestionably the common form of aedon found in north- 

 eastern Illinois. Some years ago a number of specimens of the 

 house wren from our area were sent to Dr. J. A. Allen for ex- 

 amination. He reported that they agreed with the variety 

 aztecus, even when compared with typical specimens from Ari- 

 zona and other parts of the West. Mr. Robert Ridgway has also 

 noted this form in the vicinity of Chicago. 



The range of this House Wren extends through the western 

 United States, from Mexico northward to Manitoba and the 

 Great Slave Lake. The eastern limit of its range seems to be 

 Wisconsin and Indiana, and it winters from Texas south. 



Genus OLBIORCHILUS Oberholser, 1902. 



Olbiorchilus hiemalis (Vieillot). Winter Wren. 



Troglodytes hiemalis VIEILLOT, Nouv. Diet. d'Hist. Nat., XXXIV, 



1819, 514. 

 Anorthura troglodytes var. hyemalis COUES, Key, 1872, 351. 



*Trans. Illinois State Agri. Society, Vol. I, 1853-1854, 583. 

 tBull. of the Essex Institute, Vol. VIII, 1876, 97. 



