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), anda 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, Ducking 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, I 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 
