CLASS-AYES. 



SUB-CLASS I. CARINAT/E 



(STERNUM KEELED). 

 ORDER ACCXFITRES (BIRDS OF FRET). 



Bill short, strong, stout at the base, the culmen strongly curved. Feet 

 strong, armed with powerful talons ; talons capable of being bent 

 under the feet, the inner one being strouger than the others and 

 more curved. 



Sub-order Falcones. 



With no facial disc ; plumage compact ; nostrils generally not concealed 

 by bristles ; outer toe not reversible ; toes devoid of feathers. 



FAMILY FALCONID^E. 



Head covered with feathers, though the sides of the face are more 



or less bare. 



SUB-FAMILY-^ AQUILINE. 



Hinder aspect of tarsus reticulate ; commissure of bill simply festooned. 

 GENUS UROAETUS. Tail strongly graduated. 



1. U aildax, Latham (Aquila audax, Gray), Wedge-tailed Eagle 

 (Eaglehawk). 



General colour, black in adult, rufous in young. Total length, 

 38 in. : culmen, 3 in. ;,wjng, 24*2 in. ; tail, 17'5 in. ; tarsus, 4'8 in. 

 Hab. : 1 to 9. 



GENUS NISAETUS. Tail nearly square, the difference in length of 

 middle and outer tail feathers inappreciable. 



2. N. morphnoides, Gould (Aquila morphnoides), Little Eagle. 



Rufous beneath, each shaft streaked blackish. Total length, 

 21*5 in. ; bill, 1*75 in. ; wing, 15 in: ; tail, 9'5in. ; tarsi, 2*75 in. 

 Hab. : 2, 3, 4, 6, 7, 9. 



GENUS HALIAKTUS. Tarsi bare on lower portion : nostrils more or 

 less perpendicular ovals, with bony margin all round. 



3. H. leilCOgaster, Gmelin, White-bellied Sea Eagle. 



Head and under surface white ; bill leaden blue ; wing not exceed- 

 ing 24 in. 



Young. Head buff; upper surface and wings chocolate brown; 

 chest and abdomen buffy brown. 

 Hab. : 1 to 9. 



GENUS HALIASTUR. Tarsi bare on lower portion ; nostrils circular, 

 with bony margin all round. 



4. H girreiiera, Vieillot (H. leucosternus, Gld.), sub-sp. of H. indus, 



White-headed Sea Eagle. 



Back and abdomen rich chestnut ; head and neck white ; tail 

 maroon, with broad whitish tip. 



Young. Head, breast, and abdomen brown, with long white 

 streaks. 



Hab. : 1 to 4, 8. 



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