BIRDS IN THE DISTRICT OF COLUMBIA 1 85 



228. American Bitter q. 



229. Least Bittern 



230. Great Blue Heron. 



231. American Egret 



232. Snowy Heron 



233. Little Blue Heron 



234. Green Heron 



235. Black-crowned Nlglit ( 



Heron j 



235a. Yellow-crowned Night ( 

 Heron , f 



236. Wood Ibis . 



237. Glossy Ibis. 



238. American Merganser 



239. Red-breasted Mergansei- 



240. Hooded Merganser 



241. Mallard 



242. Black Duck. 



243. Gad wall 



244. Widgeon 



245. Baldpate 



246. European Teal 



247. Green- winged Teal. 



248. Blue-winged Teal.. 



249. Shoveller ; .. 



250. Pintail 



251. Wood Duck. 



252. Redhead 



253. Canvas-back 



254. American Scaup Duck. 



255. Lesser Scaup Duck 



256. Ring necked Duck 



257. American Golden-eye.. 



258. Barrow's Golden-eye... 



259. BuiBe-head 



26C. Old-squaw 



261. American Elder.. . 



2G2. American Scoter 



263. White-winged Scoter. 



264. Surf Scoter 



orx 

 orX 

 orx 



Aug. to April. 

 May to Sept. 

 Found throughout 



year, but does' not 



breed here ? 

 Usually rare. May to 



July or later. 

 Late summer or 



early autumn. 

 July and Aug. 

 May to Sept. 



One Instance; Smith- 

 sonian grounds, 

 Aug., 1901. 

 Several records in 

 \ July. 



One record, about 

 \ 1817. Liable to oc- 

 ( cur In spring. 

 Sept. to March. 



j Sept. to March or 

 1 later. 



Oct. to April. 



Oct. to April. 



Aug. to April. 

 ( Tworecords: spring 

 "I and tall. 



Oct. to April. 

 ) One instance: April, 

 \ 1885. 



Sept. to April or May. 



Sept. to June. 

 j Sept. to March or 

 I April. 



Oct. to April. 



Rare in summer; 

 less so in spring 

 and fall. 



Oct. to May. 



Oct. to April. 



Oct. to March. 



Oct. to April. 



Sept. to April. 



Oct. to April. 



Two instances ? 



Sept. to April. 

 ; Uncommon. Oct. to 

 April. 



One instance long 

 ago. 



Oct. and Nov. 



* Rare at this seasen. 



