208 The Wilson Bulletin— No. 69. 



Eggs. 

 Three to seven, rounded ovate, 35.2 by 29 mm. Color very 

 variable ; rarely pure white, usually buffy, cream or rufous, 

 sprinkled, marbled, mottled, blotched with walnut, cinnamon, 

 chocolate, ochre and lavender. Incubation about 23 days. 



FALCO DOMINICENSIS (Gmelin). 

 CucAN Hawk. 



Geographical Distribution. 

 Cuba, casual in Florida. 



IMeasurements. 

 Male: length 22.86, wing 17.91, tail 12.75, middle toe 2.31, 

 tarsus 3.81, culmen 1.27. 



Female: tarsus 3.82, wing 18.54, tail 13.21, middle toe 2.31, 

 culmen 1 .30. 



Diagnostic Marks. 

 Dark phase, plumbeous above, light phase, like sparverius, 

 other diagnostic marks like sparverius. 



Plumage. 



Light phase, similar to sparverius, but fewer black spots 

 above, lower parts merely overlaid or washed with orange 

 color or else white ; inner webs of quills not barred with dusky, 

 merely touched with it; moustache indistinct; a conspicuous 

 white superciliary stripe. 



Dark phase, male above principally dark plumbeous, at times 

 almost blackish, except the tail : a black collar across the hind 

 neck; breast deep rusty, throat grayish. Female, above rufous 

 (young male the same), lower parts deep rusty. Otherwise 

 like sparverius. 



Fl'.^ht, habits, food, voice and nest like those of F. spar- 

 verius. 



Three to five, laid in March and April, like those of spar- 

 verius, only smaller, averaging 31 by 28 mm. 



