40 



JCURNAI. OF THE WILD BIRD IWESTICJATIOX SOCIETY. 



PEREGRINE Fat.CON (Falco peregri}iiis. Tiinst.). 



Showing the strongest development of the hooked and 



toothed bill of,.i bird of pre\'. 



Sl'OONIUl.I, [Vlatalea leucorodia. Linn. I. 

 The Spoonbill feeds by sweeping its bill to and fro 



Merganser [Mirgus serrator. Linn.). 

 Duck type of bill modified for catching fish, the jaivs 

 being narrow, with hornv teeth. 



AVOCKT iRecinvirostra avocetta, Linn.). 



.'Mtliiiuyh tile bill is so different, the Avocet feeds much 



like the Spoonbill. 



Heron [ArcUa chieiea, Linn.). 



Showing the spear-like type of bill conlnll)ne^^t innong 



fishing birds. 



Pt'FFIN iFratercttla arctica, I. A. 



The huge size of the bill is due to a horny mask, which 



is shed after breedin.g 



SOME TYPES OF BIRD'S BILLS f l-ioiii Ft mis - Bi id BvJuiviuii i"J. 



