602 



ON SOME SPECIES OF THE 



F. liornoti- 



and belly may be observed for some time after 

 the dark plumage of the back is completed. 



The Jlrst variety of the Peregrine Falcon, 

 v^rhich I shall notice, is the Yearling Falcon ; Fal^ 

 CO hor?iotinus of Brisson; Le Faucon sors of 

 BuFFON. This is the young bird in its early plu- 

 mage. It is of a lightish brown colour, viuth an 

 ash-coloured tinge 



F. (com,) 



The second variety, is the Brown Falcon , 

 Falco fiiscus of Brisson. 



The upper plumage is ferruginous-brown, with 

 black streaks beneath white, with brown spots. 

 The young of the Peregrine Falcon occurs in this 

 state in France and Switzerland. I should coU- 

 sider it as an immature female f. 



■* According to the German ornithologists, this is the yearling 

 Peregrine Falcon. Indeed, it is quite obvious from Buffon's 

 plate of Le Faueon sors, (Enl. 470.) 



^ BuFFON considered the Faucon brun moins un Faucon 

 qu'un Biizard." Cuvier has adopted a similar opinion, and 

 considers it synonimous with the Common Buzzard, (La buse 

 prdinaire.) 



The F. ( communis ) ftiscus of Gmelin, according to Beck- 

 stein, is a distinct species ; it is the F.fuscus of the latter au* 

 thor. He is also of opinion, that xhe F.fuscus of JBrisson is 

 probably the same as his F.fuscus, and consequently distinct 

 |rQ?n tJiQ F. pere^rhms^ 



