

GEESE SWAN. 359 



of the mountain in its journeys north and south. Common 

 in Europe and Asia. 



PODICEPS Carolinensis, (Lath.) Pied-bill dobchick. This 

 is an American species exclusively. It is said to be the 

 "commonest species in the United States." It is only seen 

 here on its journeys north and south, to and from its breed- 

 ing region in the far north. 



PODICEPS Minor, (Lath.) Little grebe, or dobchick. 

 This is the smallest of the grebes, and said to be " common 

 to the colder parts of both continents, having been seen 

 around Hudson's Bay, though hitherto unknown even as a 

 visitor within the limits of the United States." This is cer- 

 tainly a mistake, as stragglers have been seen on the Alle- 

 ghany, and captured in ponds. 



GEESE. 

 (Anser, Briss.) 



ANSER Canadensis, (Vieill.) Canada goose. This goose 

 is a bird of passage only in the United States. It breeds 

 between 50 and 67 north latitude. The breeding range 

 of this goose is said to extend through thirty degrees. 

 The great rallying regions of the north are the shores of 

 Hudson's Bay. It sometimes alights on the ponds and dams 

 of the mountain in its vernal and autumnal flights. 



ANSER Cinereus, (Meyer.) This is the common or do- 

 mestic goose, introduced from Europe. 



SWAN. 



CYGNUS Americanus. -The Swan visits the arctic regions 

 for the purpose of executing the great function of reproduc- 

 tion, in " the short but brilliant summers which there pre- 

 vail," passing over Pennsylvania early in spring and late in 

 the fall, on its return south. It sometimes rests on ponds 

 and streams for a short time on its journeys. 



