84 THE CHICAGO ACADEMY OF SCIENCES. 



perfectly quiet and the bird soon appeared with a slow measured 

 step, with its tail spread, and with its wings lowered to within 

 two or three inches of the log but never allowed to touch it. 

 Its head was not depressed nor was its tail held as far forward 

 as is the case in the strutting of the turkey cock. As he turned 

 he slightly lowered his feathers and tail, and retraced his steps 

 to the other end of the log strutting as before. The drumming 

 seemed to be produced by one long beat and two short spasmodic 

 ones. 



The range of the Ruffed Grouse includes the eastern United 

 States from Georgia and Arkansas northward into southern 

 Canada, and westward to the Great Plains. 



Genus LAGOPUS Brisson, 1760. 



Lagopus lagopus (Linnaeus). Willow Ptarmigan. 



Tetrao lagopus LINN^US, S. N., ed. 10, I, 1758, 159. 



Tetrao saliceti TEMM., Man., II, 1820, 474. 



Lagopus albus AUDUBON, Synop., 1839, 207. 



Lagopus lagopus STEJNEGER, Proc. U. S. Nat. Mus., VIII, 1885, 20. 



Popular synonyms: WHITE PTARMIGAN. WILLOW GROUSE. 



It is very doubtful if this species should be included in the 

 fauna of our area. It is done because of the following published 

 notes. In his "Catalogue of Animals observed in Cook County, 

 Illinois,"* Mr. Robert Kennicott records this species with the 

 comment "Sometimes found in the timber along Lake Michigan." 

 Regarding Mr. Kennicott's note, Mr. E. W. Nelson says :f "This 

 note was based I think, upon the capture of two specimens, 

 December, 1846, near Racine (Wisconsin), as noted by Dr. 

 Hoy (Wis. Agr. Rep., 1852)." 



The A. O. U. Check-list gives the following as the geograph- 

 ical range of this Ptarmigan: "Arctic regions; in America 

 south to Sitka and the British Provinces. Accidental in New 

 England (Bangor, Maine, and Essex County, Massachusetts)." 



Genus TYMPANUCHUS Gloger, 1842. 



Tympamichus americanus (Reichenbach). Prairie Hen. 



Tetrao cupido WILSON, Amer. Orn., Ill, 1811, 104, pi. 27 (nee 



Linnaeus). 



Cupidonia cupido BAIRD, Birds N. Amer., 1838, 628. 

 Cupidonia americanus REICHENBACH, Syst. Av., 1852, p. xxix. 

 Tympanuchus americanus RIDGWAY, Auk, Jan., Ill, 1886, 133. 

 Popular synonyms : PRAIRIE CHICKEN. PINNATED GROUSE. 



*Trans. Illinois State Apri. Society, Vol. I, 1853-1854, 580. 



tBirds of Northeastern Illinois. Bull, of the Essex Institute, Vol. VIII, 1876, 122. 



