ECOLOGY OF ISLE ROYALE. 345 



by rowing fast they were overtaken, but escaped by diving. This same 

 Hock was seen in this vicinity several times afterwards. 



6. Mareca americana (137). Baldpate. 



Eange: North America from the Arctic Ocean south in winter, to 

 Guatemala and Cuba. Breeds chiefly north of United States. 



Station: Washington Harbor, II, '04. 



Migration : Sept. 5. 



On September 5 a single individual was found on "Washington River, 

 II, '04. It was poorly colored ; perhaps an immature specimen. 



7. Nettion caroUnensis (139). Green-winged Teal. 



Range : North America. Breeding chiefly north of the United States 

 and migrating south to Honduras and Cuba. 



Station: Washington Harbor, II, '04. 



Migration : September 4. 



A flock of five appeared in the Harbor on the morning of September 

 4 but soon disappeared. 



S. Aythya mavila- (148). American Scaup Duck. 



Range: North America, breeding far north. South in the winter to 

 Guatemala. 



Stations : Siskowit Bay, V. 



Washington Harbor, X, '04. 



Migration : Aug. 4 to Sept. 1. 



This duck was very rare here. One pair was found on Siskowit Bay 

 near Wright's Island on August 4. Just before the hard storm which 

 commenced September 1, a flock of these birds came into the harbor and 

 Avere seen near Washington Island (X, '04). 



9. Branta canadensi.9 (172). Canada Goose. 



Range: Temperate North America, breeding in the northern United 

 States and British Provinces; south, in winter to Mexico. 



Stations: Washington Harbor, I, '04. 



Migration : September 16. 



On the afternoon of September 16, a solitary Canada Goose was ob- 

 served flying over the island in a southerly direction. The residents on 

 the island reported that in late October great flocks of geese pass over, 

 sometimes stopping for a few hours, but never remaining for any length 

 of time. 



10. Bofaurus lentiginosus (190). American Bittern. 



Range: Temperate North America. South to Guatemala, Cuba, Ja- 

 maica and Bermuda. 



Stations: Shore of Sumner Lake, III, 5. 



Breeding : Dead young found on July 18. 



Only one of this species was seen during both years, although there are 

 many haunts which seem suitable for it. On July 18 and again on the 

 25th a single individual was flushed from the grassy bog along the edge 

 of Sumner Lake. 



Breeding Notes : An old nest was found July 18. It was on a grassy 

 tuft in the bog, and contained an addled egg and two dead young. The 

 nest consisted simply of a depression in the mat of green and dry grass. 



11. Gallinago delicata (230). Wilson's Snipe. 



Range: North and Middle America. Breeding from the northern 

 United States northward; south in winter to the West Indies. 

 45 



