86 A FIELD GUIDE IN NATURE-STUDY 



A-6. The flycatchers that watch for insects from a perch and return after 

 securing the prey. 



A-7. Birds, not in the foregoing groups, conspicuously marked with blue. 



A-8. Birds conspicuously marked with red. 



A-g. Birds conspicuously marked with yellow. 

 A- 10. Birds that appear chiefly brown. 

 A-II. Birds that are black or black and white. 

 A-i2. Birds that will not go into any of the foregoing groups. 



A- 1. Ducks or ducklike birds, with characteristic throbbing 

 flight 



E Diving rather than flying when startled and remain- 

 ing under the water for some considerable time; 

 almost tailless. 



I More than 2 ft. in length (as large as a goose) Loon 



II Less than 2 ft. in length 



O White wing patch showing when wing is 

 flapped in flight; under parts pure white; 

 head usually black or yellow, or black and 

 white Horned Grebe 



OO No wing patch; under parts ashy 



X Bill round, short Pied-billed Grebe 



XX Bill flat, upcurved Ruddy Duck 



EE Flying rather than diving when startled, or, if the 

 latter, remaining under for a few moments only; 

 with tail. Ducks and geese. 

 I Crested 



Crest sticking up like a pompadour; a white 

 spot on it 



X Neck black Hooded Merganser 



XX Neck white Bufflehead, male 



OO Crest hanging down neck 

 X Breast spotted 



Y Chin white Wood Duck 



YY Chin dark Green-winged Teal, male 



XX Breast not conspicuously spotted 



Y Head black, breast brown, streaked 



with black Red-breasted Merganser, male 



YY Head brown, breast whitish 



a Crest double; double white 



wing patch Red-breasted Merganser, female 



aa Crest single; single white wing 



patch American Merganser, female 



II No crest 



O Tail with long slender feathers 



X Head dark, no white spot Pintail 



