ARDEA. 120 



in A. herodlas), tho forehead and middle of 

 crown pure white. Young not essentially 

 different from same stage of A. wuerde- 

 mannif Length about 48.00-54.00, wing 

 20.00-20.50, culmen G.50-7.00, tarsus 8.50- 

 9.00. Etjgs about 2.G5 X 1-S5. Hah. Western 

 Florida. 



193. A. wardi Eidqw. Ward's Heron. 



jr'. Lower parts black or dusky, broadly suijicd with 



white (tho two colors in nearly equal proportion 



in young, however) ; tarsus not more than 8.00 ; 



legs and feet black in adult. 



Adult: Occiput and sides of crown black; fore- 

 head and centre of erown pure white (exactly 

 as in A. wardi). Young : VYhoIe top of head 

 dusky, some of the feathers with paler shaft- 

 streaks ; wing-coverts without white spots or 

 distinct rufous spots. Length about 42.00- 

 50.00, wing 17.90-19.85, culmen 4.30-6.25, 

 tarsus 6.00-8.00. Eggs 3-6, about 2.50 X 

 1.50. Hab. North America in general, north 

 to Hudson's Bay and Sitka; south through- 

 out West Indies and Middle America, and as 

 far as Colombia and Venezuela ; Galapagos ? ; 

 Bermudas. 

 194. A. herodias Linn. Great Blue Heron. 

 p. Thighs and edge of wing white. 



^'. Adult with occiput and sides of ei-own black, the 

 forehead and centre of crown pui"e white (as in 

 A. herodlas and A. icardl) ; neck ash-gray ; length 

 about 37.00, wing about 18.50, culmen 4.80. tarsus 

 6.00-6.25. Eggs 2.40 X 1-71. Hab. Northern 

 portion of eastern hemisphere ; accidental in 

 southern Greenland. 



195. A. cinerea Linn. European Blue Heron. 

 g^. Adult with entire top of head black ; neck pure 

 white ; wing 18.50-20.00, culmen 5.85-6.75, tarsus 

 7.20-8.00. Hab. South America. 



A. cocoi LiNX. Cocoi Heron.' 



d'. Wing less than 17.00. Adult in nuptial plumage, with the scapular 



plumes excessivelj'' elongateil, reaching far bcj-ond end of tail, 



their shafts thick and stiffened, their webs decomposed ; head 



without crest or plumes, and feathers of lower neck (in Amer- 



> Ardea cocoi Lixs., S. N. ctl. 12, i. 1760, 237. 

 17 



