180 NATURE-STUDY REVIEW [13:5— May, 1917 



Female Canvasback. 

 CC. Wings and back brownish, speculum green. 

 D. Head chestnut with green stripes. 



Male Green-winged Teal. 

 DD. Head like back. Female and immature male. 

 Green-winged Teal. 

 AAAA. Birds with uniformly dark wings. 



i. Head largely white tail pointed, white areas on body in some 

 plumages. Old Squaw. 



2. Head greenish with white stripes. Male Wood Duck. 



3. Head brownish with white area about eye. Female Wood 



Duck. 



4. Plumage entirely black. 



C. Base of bill yellow. Male American Scoter. 

 CC. Plumage black except for white spots on head. 

 Male Surf Scoter. 



5. Plumage reddish-brown, cheeks white, tail stiff and erectile. 



Male Ruddy Duck 



6. Plumage greyish-brown, cheeks light, tail stiff and erectile. 



Female Ruddy Duck 



April 19. 8 a. m. (1852) — Down river to half mile below Carlisle 

 Bridge, the river being high, yet not high for the spring. 



Saw and heard the white bellied swallows this morning for the 

 first time. Took boat at Stedman Bittrick's, a gunners boat, 

 smelling of muskrats and provided with slats for bushing the 

 boat. Having got into the Great Meadows, after grounding 

 once or twice on low spits of grass ground, we begin to see ducks 

 which we have scared, flying low over the water, always with a 

 striking parallelism in the direction of their flight. They fly like 

 regulars. They are like rolling-pins with wings. * * * Ducks 

 are most commonly seen flying by twos or threes. 



Thoreau's Journal. 



