No. 20.] THE BIRDS OF CONNECTICUT. 47 



B.) ; July 22 — Aug. i8, and Sept. 7, 1904, Niantic, one to ten 

 seen (McCook).^ 



Butorides virescens virescens (Linnaeus). Green Heron. 



A common summer resident throughout the state, arriving 

 early in May, and the majority leaving early in September. 



Earliest record. New Haven, April 27, 1886; Portland, April 

 24, 1902. 



Latest record. New Haven, Oct. 2, 1902, Oct. 15, 1898 (E. 

 S. W.) ; Portland, Oct. i, 1894; Guilford, Oct. 22, 1909 (H. E. 

 Watrous). 



Nest. In a cedar, hemlock, or white birch, as a rule, and at 

 a height of from 8 to 30 feet from the ground. Frequently in a 

 small colony, but often alone. 



Eggs. 4 or 5, usually 5 ; the last of May. 



Nesting dates. Earliest record. May 11, 1906, five eggs 

 (E. S. W.). Latest record. July 8, 1882, five young (L. B. B.). 



Nycticorax nycticorax n^vius (Boddaert). Black-crowned 

 Night Heron. 



A summer resident from May to October. 



Earliest record. New Haven, April 3, 1888; Portland, April 

 28, 1905. 



Latest record. New Haven, Nov. 17, 1900; Portland, Nov. 

 12, 1902. 



Nest. Usually high in the top of a pine or hemlock and. in 

 colonies. 



Eggs. 3-5; the latter part of May. 



Nesting dates. Earliest record. May 4, 1902, five eggs 

 (Beers). Latest record. June 20, 1886, two eggs (Eames). 



Colonies. Rocky Hill, 1872, hundreds reported breeding in 

 a heronry;^ Lake Whitney, prior to 1881, a colony in Heron 

 Swamp — again occupied by many pairs in 1904 and later 

 (Bennett) ; near Norwalk, 1903, twenty to twenty-five pairs 

 breeding in a heronry (Canfield and Watrous), numbers greatly 

 increased in 1904 (Perry) ; Wood^ reported a rookery where 



^Auk, xxii, I, p. 77. 



•Merriam, Birds of Conn., p. 112. 



•Samuels, Birds of New England, p. 410. 



