FLYCATCHERS 305 



the air and swoop quickly down, the whistling of his wings 

 making a piercing "whee" or "chic-we-a" and again rising 

 uttering his vocal note. The female is generally perched not 

 far from the spot at which he reaches his lowest position and 

 begins to rise in a sweeping curve. At such times the male is 

 very pugnacious, driving rivals of his own kind and attacking 

 other birds with success, even successfully driving Hawks, King- 

 birds, Crows, etc. 



If the female is closely watched at times when done with 

 feeding she sits on the trees near at hand and preens her fea- 

 thers, she will often be seen to go to the nest, if it is near at 

 hand, and after hovering over it will settle down. The female 

 seems to do all the work of building the nest, incubating the eggs 

 and feeding the young. Often nest building continues at inter- 

 vals during the period of incubation, and sometimes even after 

 the young are hatched. The incubation period is twelve days, 

 and the young leave the nest about fifteen days after they are 

 hatched. 



Order PASSERES. Perching Birds. 



Suborder CLAMATORES. Songless Perching Birds. 

 Family TYRANNID^. Tyrant Flycatchers. 



Key to the species of TYRANNID^. 



A. Wing over 3.00. 



1. An orange red concealed crown patch present. 

 §. Lower parts white ; tail black. Kingbird. 



§§. Lower parts yellow ; tail black. Arkansas Kingbird. (Adult). 

 (As the young of the Arkansas Kingbird are not likely to 

 occur here no provision is made in the key for them). 



2. No orange red crown patch. 



§. Tail blackish. Kingbird. (Immature). 

 §§. Tail not blackish. 



?. Inner vein of tail feathers rufous; belly yellow. Crested 



Flycatcher. 

 ??. Tail fuscous, inner vein not nrfous. 



