101 ,„, ,. 



[Ihe Keys. 



KEY No. 14.— EEGULAR FOKMATIOX IN 

 SYSTEMATIC Fl.IUHT. 



A. — Bhds tnat Fiy iv Echelon or V Formafinn. 



The True Ducks, especially Pintail. — Very regular 

 formation. clianging position teas than most and 

 Wiqeoii. — Generally fly in line formation, very close toge- 

 ther, always irregular and altering much in shape as the 

 birds liy. 



B. — Birds fhat Fly En Afasse. 

 The Pochards. 



.4f 



