GOATSUCKERS, SWIFTS, ETC. 



191 



Fig. 103. 

 Strong foot of 

 Sparrow. 



in feeding habits. (See Fig. 120, p. 193 and 113, 

 p. 192.) 



Though the Hummingbird has branched off 

 so far from the Swifts and Goat- 

 suckers in form of bill (see Figs. 

 9 and 10, p. 26), it resembles 

 them in its extreme development 

 of wing (Figs. 19, p. 45, 99, p. 

 189, and 100, p. 190), and the 

 undeveloped character of its feet 

 (see Figs. 7, p. 25, and 104, p. 

 191), reminding us again of the 

 dissimilarity of the whole order 

 to the short-wdnged, strong- 

 footed Grouse, Sparrows (Figs. 

 101, p. 190, and 103, p. 191), 

 Wrens, and Thrashers. 



We have now a number of new types of bill to 

 add to those of the Hummingbird, Quail, Dove, 

 Flycatcher, Crow, and Oriole types already noticed, 

 for we have the sword of the 

 Kingfisher, the fly - traps of 

 the Goatsucker and Sw^allow, 

 the seed-crackers of the Gros- 

 beak and Sparrow, the curious 

 nij^pers of the Crossbill, and 

 the heavy drill of the Wood- 

 pecker, each in turn es23ecially adapted to the 

 birds' food habits. 



Fig. 104. 



Weak foot of 



Niahtiiawk. 



Fig. 105. 

 Footprint of Crow. 



