EAGLES. 



231 



the country has been irrigated; and he refers to the sudden immigration of a 

 number of these birds into a district where irrigation works had been recently 

 opened. The same observer notes that this eagle generally sits in a slouching 

 kite-like fashion across a branch, halfway up a tree ; whereas, on the other hand, 

 the imperial and tawny eagles generally sit bolt upright at the very top of a tree, 



SPOTTED KAGLE (i Hat. size). 



and consequently cannot be seen by an observer immediately beneath. The spotted 

 eagle commonly nests in trees, . 



Other species of the genus arc the tawny eagle {A. rajmx), of 

 other species. ^^^.^.^ distinguished by the tawny hue of the inunature plumage ; 

 the slightly smaller but closely allied Indian tawny eagle (A. vindhiana); the 

 small brown Wahlberg's eagle (A. wahlbergi), of Africa, distinguished by a slight 

 occipital crest : and the remarkable South African vulturine eagle {A. verrcauxi), 

 which differs from all the rest in having the lower part of the beak and rump 

 white, the rest of the plumage being black. Remains of extinct eagles, some of 

 w^hich probably belong to Nisaetus, while others may pertain to Aquila, occur 



