260 OHIO EXPERIMENT STATION. 



tain localities nearly every year. Its favorite haunts are the woods and swamps in 

 the valley of the Killbuck, where in autumn, after a suitable season, flocks of twenty 

 or thirty are sometimes to be seen. It remains until^October or November. 



SUBFAMILY FULIQULIN/E. SEA DUCKS. 

 GENUS AYTHYA. BOIE. 



SUBGENUS AYTHYA. 



18. Aythya americana (Evx.) 

 Redhead. 



Now a rare transient visitor, although common many years ago, appearing regu- 

 larly in spring in flocks along Killbuck Creek. 



SUBGENUS ARISTONETTA. BAiRD. 1 



19. Aythya vallisneria (WILS.) 

 Canvas-back. 



Transient visitor ; rare. It is seen singly or in pairs, sometimes with other species 

 of Ducks, and chiefly on Killbuck Creek. 



SUBGENUS FULIGULA. STEPHENS. 



20. Aythya affinis (EYT.). 

 Lesser Scaup Duck; Raft Duck. 



A common spring and fall transient, though never seen in large flocks. One of 

 the first Ducks to appear in the spring, and among the latest to depart in autumn. It 

 associates at times with Mallards, Pintails and Baldpates. 



GENUS ' GLAUCIONETTA. STEJNEGER. 



21. Glaucionetta clangula americana (BONAP.). 

 American Golden-eye. 



A tolerably common though irregular spring transient ; not observed in the'fall. 

 Apparently of most frequent occurrence in March, when it is often found on the 

 smaller streams and ponds. An adult male in the collection of Mr. John Blandford 

 was shot near Wooster, from a flock of four, in the spring of 1877. Another specimen, 

 a female, in the writer's collection, was taken in the same vicinity on March 29, 1893. 



iThis subgenus was unintentionally omitted from the A. O. U. Check List. (CF RIDGWAY, Manual of 

 North American Birds, p. 102.) 



