Ala. 
Alas. 
Alta. 
alb. 
Am. 
anat. 
Arctic 
Argent. 
Ariz. 
Ark. 
BaiGs 
Boliv. 
Braz. 
Bull. 
Calif. 
cat. 
Co. 
coll. 
Colo. 
Colom. 
col. pl. 
Conn. 
corr. 
(Ga Ake 
Del. 
descr. 
ed. 
Engl. 
fig. 
Fla. 
Ga. 
Galap. Is. 
G. Br. 
g. dist. 
geog. 
Green. 
Guat. 
hbt. 
Helg. 
ABBREVIATIONS 
An asterisk (*) denotes an original description. 
Alabama. 
Alaska. 
Alberta. 
albino. 
America or American. 
anatomy. 
Arctic regions. 
Argentina. 
Arizona. 
Arkansas. 
British Columbia. 
Bolivia. 
Brazil. 
Bulletin. 
California. 
catalogue. 
County. 
collection. 
Colorado. 
Colombia. 
colored plate. 
Connecticut. 
correction, 
Gosta (Rica. 
Delaware. 
description. 
edition. 
England. 
figure. 
Florida. 
Georgia. 
Galapagos Islands. 
Great Britain. 
general distribution. 
geographical. 
Greenland. 
Guatemala. 
habits. 
Heligoland. 
lalate 
Hond. 
Hud. B. 
hyb. 
The 
Ta. 
Ill. 
Ind. 
introd. 
Ts. 
Kamt. 
Kan. 
Ky. 
La. 
GA 
Mack. 
mag. 
Man. 
Mass. 
Md. 
Me. 
meas. 
melan. 
Mex. 
Mich. 
mig. 
Minn. 
Misc. 
Miss. 
mit. 
Mo. 
Mont. 
Mts. 
N. 
nat. hist. 
Hawaiian Islands. 
Honduras. 
Hudson Bay. 
hybrid. 
Island. 
Towa. 
Illinois. 
Indiana. 
introduced. 
Islands. 
Kamtschatka. 
Kansas. 
Kentucky. 
Louisiana. 
Lower California. 
Mackenzie. 
magazine. 
Manitoba. 
Massachusetts. 
Maryland. 
Maine. 
measurements. 
melanism. 
Mexico. 
Michigan. 
migration. 
Minnesota. 
miscellaneous. 
Mississippi. 
moult. 
Missouri. 
Montana. 
Mountains. 
North. 
natural history. 
New Brunswick. 
North Carolina. 
North Dakota. 
