EGGS OF NORTH AMERICAN BIRDS. 57 



coarsely spotted with brown and umber of varying shades ; 

 1.17 + 1.20 to 1.20 4- 1.60. Breeds throughout North 

 America, excepting, perhaps, Florida, in the more northern 

 sections, in May. Nests in trees. 



333. Cooper's Hawk, Accipiter cooperi. (Type, Plate 

 V.) Eggs, 2 to 4, rather spherical, pale bluish white, often 

 spotted with pale reddish brown ; 1.90 -f- 1,50 to 2.10 -f- 1.60. 

 Breeds throughout North America, excepting Florida, in May, 

 in the more northern portions, and a little earlier in the 

 south. 



334. American Goshawk, Accipiter atricapillus. Eggs, 3 

 or 4, varying from spherical to oval, bluish white, often finely 

 mottled with pale reddish brown ; 1.82 -|- 2.30 to 1.92 -f- 2.32. 

 Breeds from Maine northward, in May. Nests placed in trees. 



334a. Western Goshawk, Accijnter atricapillus striatu- 

 lus. Eggs, indistinguishable from those of No. 334. Breeds 

 in Western North America. 



335. Harris's Hawk, Parabuteo unicinctus harrisi. Eggs, 

 2 to 4, varying from oval to spherical, bluish white, usually un- 

 spotted, but occasionally marked with reddish and purplish 

 brown; 1.50 + 2.00 to 1.70+ 2.20. Breeds in Mississippi, 

 Texas, and Arizona, southward to Panama, in May. Nests in 

 trees. 



336. European Buzzard, Buteo huteo. Eggs, 3 or 4, 

 rather spherical, yellowish white, spotted and blotched with 

 brown, umber, and lilac of varying shades; 1.75 -j- 2.75 to 

 1.80 -f- 2.80. Extralimital. Occurs in Europe afid Western 

 Asia ; bird accidental in Michigan. 



337. Red-tailed Hawk, Buteo borealis. Eggs, 2 or 3, 

 elliptical or oval, bluish white, usually, but not always, spotted 

 and blotched with brown and umber of varying shades; 1.65 

 -{- 2.10 to 1.80 -j- 2.25. Breeds throughout Eastern North 

 America, excepting Florida, west to the Great Plains, in 

 March and April. Nests placed in trees. 



337a, Kridek's Hawk, Buteo borealis kriderii. Eggs, 



