1895] MARYLAND ACADEMY OF SCIENCES. 265 



borhood three birds, hatched in confinement from eggs taken 

 from a hollow tree." 



Resident but not common, at Washington (Richmond); 

 Hagerstown (Small) ; Cumberland (Shriver). 



Aythya americana (146). Redhead. 



Common during winter in tidewater Maryland. They arrive 

 earlier, but the first date I have is October 3 ('89), when an 

 enormous number of ducks were "bedded" on Gunpowder 

 River, below Maxwell's Point, quite a large number of them 

 being Redheads. As late as May 2 ('95, Tylor), about 150 

 were on Gunpowder, near Magnolia, in five or six small bunches. 

 Inland, they are numerously recorded. About 10 years ago 500 

 or 600 stopped for a few days on Lake Roland (Fisher) ; on 

 March 29 ('91), several small bunches were on Loch Raven 

 (Wholey), and a number have been taken in Dulaney's Valley 

 (Dukehurt). On November 4 (93), a few were on the Potomac 

 near Knoxville (Fisher), and they are given as occasional at 

 Cumberland (Shriver). 



Aythya vallisneria (147). Canvasback. 



Still a common winter resident of tidewater Maryland, though 

 most numerous during fall and spring flights. 



On October 3, 1889, quite a large number where with the 

 Redheads, Blackheads, etc., bedded on Gunpowder River, and 

 they have been taken at Grace's Quarter from October 21 

 ('80) to April 4 ('86, Bucking Record), but no doubt some 

 remain later. 



Aythya marila nearctica (148). American Scaup Duck. 



Common on the Chesapeake and its numerous arms during 

 winter. On October 3, 1889, a number were with the other 

 ducks on Gunpowder River, and on March 25, 1894, 1 watched 

 a most affectionate pair, male and female, for some time at 

 Cedar Point. It also occurs inland, about 200 were on Lake 

 Roland October 29 ('92, Fisher). Dr. Owings, of Ellicott 



