126 THE UNIVERSITY OF THE STATE OF NEW YORK 



c Relation to haunts and habits 



Most birds nest where they search for their food, but there are 



exceptions to this rule. 



Bobolink, a bird of the fields Nu Bo2 



OTrenbird, a terrestrial bird of the woods Nu Ov3 



Downy woodpecker Nu WpD7 



Downy woodpecker and nest Nu WpD5 



Woodpeckers search for their food by drilling in trunks of 

 trees, where they nest. 



Brown creeper, seeking food in crevices of Nu CsB 



bark 

 Brown creeper, nest under bark of tree Nu CsB2 



Aerial birds show great variety as to nesting sites. 



Bank swallow Nu SuB2 



Barn swallow Nu SuC4 



Tree swallow Nu SuT2 



d Change of site due to change of conditions 



Some birds are much more adaptable than others and with 

 the change in natural conditions have been able to take advan- 

 tage of new conditions as indicated by the various birds that 

 nest about the habitations of man. 



Clifif swallow, natural site Nu SuE2 



Cliflf swallow, adapted site Nu SuE3 



Phoebe, natural site Nu Pk3 



Phoebe, adapted site Nu Pk4 



4 Nest building 



a Gathering material 



Yellow warbler with cotton Nu WY3 



Oriole gathering strings Nu OrB2 



Tree swallow with feather Nu SuT3 



h The start of the nest 



Red-winged blackbird Nu B124 



c For ornamentation as a means of concealment 



The "ornamentation of nests," the employment of ribbons and 

 paper by thrushes and vireos, and of lichens by pewees and hum- 

 mingbirds, is entirely for protection, to make the nest look like 

 something else. 



