THE BIRD BOOK 



be seen to, one at a time, dive headforemost into 



tlie tops o£ cliinineys. The nest 



is made of small twigs firmly 



glued to the sides of the chim- ■ '■ 



ney, or tree, and to each other. 



with the glutinous saliva of the -^ y^ 



bird, making a narrow semi-circle "^ ' 



platform for the reception of White 



their three to five white eggs which are deposited 

 in May or June: size .75 x .50. 



t21-. Vattx's Swift. Chtviura vaux'i. 



Range. — Western United States, chiefly west of 

 the Rockies; breeding north to British Columbia, 

 and wintering south of the United States. 



Similar to the last but smaller 

 (length 4.5 inches), and paler in 

 color, fading to white on the 

 throat. The habits of this spe- 

 cies are like tho'se of the east- 

 ern Chimney Swift, except that 

 the majority of tjiese species still 

 continue to use hollow trees as 

 nesting places. The eggs are just like those of 

 the last bird. 



White 



\--l:i 



WllITK T 



\TED Swift. 



jliro nil ales mi'hnioli'iinis. 



/mf 



525-52fi 



Range. — Western United States south of Can- 

 ada, and chiefly in the Tiocky Mountains, and in 

 California ranges, north to Lat. 38°. 

 A handsome species, 6.5 inches in length, with blackish upper parts and sides, 

 and white throat, breast and central line of under parts. Hank 

 patches and ends of secondaries; tail feathers not spined or ?. 



stiffened. These birds are fairly common in some localities \, 



within their range, but appear to be found only on high ranges ,) 



or in their immediate vicinity. They nest in crevices and 

 caves in the face of cliffs, making a nest similar in construe 

 tion to tliat of the Chimney Swift but of weed stalks instead Wliite 



of twigs, and lined with feathers. 

 June or July; size .85 x .50. 



They lay four or five dull white eggs, during 



liTO 



