76 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



of hemlock or pine sticks and twigs, the larger ones on the out- 

 side, the smaller ones inside, with a small depression for the 

 eggs. 



Eggs. 3 to 7, usually 5 ; toward the end of May. 



Nesting dates. Earliest record. May 7, 1896, two eggs 

 (L. B. B.). Latest record. June 26, 1883, three eggs (C. L. R.). 1 



C. L. R. states that 2 " the first clutch almost always contains 

 five, but, if the eggs are taken successively as laid, the normal 

 clutch may run perhaps to fifteen or eighteen," e. g., May 23, 

 1880, seventeen eggs. 1 



Both ovaries were developed in 17 of 20 females, chiefly young, 

 examined between 1902 and 1905 by L. B. B. 



Accipiter cooperi (Bonaparte). Cooper's Hawk. 



A tolerably common summer resident from April to October, 

 though more common during the migrations ; occasionally win- 

 ters. This species is annually becoming rarer over most of the 

 state. 



Earliest record. New Haven, March 16, 1887, March 10, 

 1888 (Webb) ; Portland, March 14, 1898. 



Latest record. New Haven, Nov. 19, 1904; Portland, Nov. 

 12, 1904. 



Winter records. Feb. 20, 1888, Feb. i, 1894, Dec. 30, 1902, 

 New Haven (L. B. B.) ; Jan. 12, 1901, Portland (J. H. S.) ; 

 Jan. 31, 1902, Saybrook (J. N. C). 



Nest. In a hemlock or deciduous tree, usually toward the 

 center of a large piece of woodland ; 30 to 70 feet above the 

 ground. 



Eggs. 4 to 6 ; usually 4 or 5 ; about the middle of May. 



Ne'sting dates. Earliest record. April 28, 1884, one egg (L. 

 B. B.) ; April 30, 1886, three eggs (Eames). Latest record. 

 June 24, 1911, four eggs (C. G. H.). 



A pair of hawks will breed year after year in the same woods,, 

 often in the same nest (C. L. R.). s 



Frequently several days elapse between the laying of the dif- 

 ferent eggs of a set, oviposition usually occupying ten days. 



1 0. and O. t xiii, 3, pp. 34-7. 

 a O. and O., vii, 15, p. 117. 

 SO. and O., ii, 4, p. 25. 



