3irds of Toronto, Ontario. 
By James H. Fleming. 
Pt.I, Water Birds. 
Auk, XXIII, Got., 1903, p.444. 
40. Aythya americana. Redhead. — Common migrant, and an irreg- 
ular winter resident; a flock remained during the winter of 1901-02, leav- 
ing on March 15. A small flock of non-breeding birds remained through 
the summer of 1906, but they usually leave before April 16. 
This duck decreased till about 1890 when no birds were seen; the 
increase began soon afterwards and they rapidly regained their old 
numbers. 
