Supplement to " The E»iu."' I 7 



Length about 26 inches ; forehead, eyebrow, and throat white. 



Notophoyx novcB-hollandice (White-fronted Heron). 



192. Phimage grey and white or black and white . . . . . . 193 



Plumage chestnut apd white or mottled . . . . . . 195 



193. Breast and abdomen pure white . . . . . . . . 194 



Breast and abdomen streaked with black. 



Notophoyx pacifica (White-necked Heron). 



194. Crown of head and sides of face black. 



Notophoyx flavirostris (Pied Egret). 

 Whole head white. Notophoyx aruensis (Aru Egret). 



195. Length about 10 inches ; crown black (male) or rufous (female). 



Ardetta pusilla (Little Bittern). 



Length more than 15 inches . . . . . . . . 196 



196. Length about 16 inches . . . . . . . . . . 197 



Length more than 19 inches . . . . . . . . 198 



197. Length 16 inches ; wing 5.2 inches. 



Ardetta sinensis (Little Yellow Bittern). 



Length 17 inches ; wing 7.7 inches ; feathers of shoulder edged 



sandy. Butoroides stagnatilis (Thick-billed Bittern). 



198. Length agout 24 inches . . . . . . . . . . 199 



Length about 19 inches ; wing 11.5 inches; plumage light chestnut 



and white, cap black, with two white plumes (but when not 

 mature whole plumage is mottled) 



Nycticorax caledonicus (Night-Heron). 



199. Length 21 to 24 inches ; wing about 8.9 inches and uniform in colour. 



Diipetor gouldi (Black Bittern). 

 Length 24 inches or more ; wing 12.5 inches, and mottled. 



Botaurus pceciloptilns (Bittern). 



200. Feet strong, with powerful claws ; bill stout, very stronglj/ hooked. 



Birds of Prey. 201 

 Xo powerful talons ; bill not strongly hooked [except in Cockatoos 



and Parrots (Xo. 243), birds with two toes turned to rear] 242 



201. Eyes directed to the front ; face encircled by a disk of feathers ; ! 



toes feathered. Owls. 202 



Eyes on sides of head ; nostrils and toes bare of feathers. 



Eagles, Falcons, and Hawks. 215 



202. Inner toe equal in length to middle toe, claw of which is serrated ; 



tarsus twice as long as middle toe. Strix. 203 



Middle toe longest and its claw not serrated ; tarsus not twice 



length of middle toe. Ninox. 207 



203. Under surface pure white with small brown spots 



5. delicahda (Delicate Owl). 

 Under surface buff or sooty with brown or white spots . . . . 204 



204. General colour sooty. 5. tenebricosa (Sooty Owl). 

 General colour brown . . . . . . . . . . 205 



205. Back finely mottled and spotted ; tarsus 2.5 inches . . . . 206 

 Back with spots only of wliite ; tarsus 3.5 inches. 



5. Candida ((irass-Owl). 



206. Face disk purplish, margined with deep brown spots. 



S. novcB-hollandicB (Masked Owl). 



