VOl 'l9S XI1 ] Rathbun, Wates Birds of the Puget Sound. 459 



Valley includes several groups of species that do not come 

 under any of the above headings. 



Non-migratory species and those which occur during the 

 winter. 37 



Species that barely reach the Mackenzie Valley from the 

 south, being found on the Athabaska and not ranging north 

 to Lake Athabaska. 41 



Species not included under the previous headings, being 

 for the most part stragglers or species that are most common 

 on the Arctic islands. 29 



Total species known to occur in the Mackenzie Valley 268 



The distinctly eastern character of the avifauna of the Mackenzie 

 Valley is shown by the fact that of the one hundred and sixty-one 

 regular breeding migrants, only eighteen are known with certainty to 

 reach the Valley from the west or southwest, while it is known with 

 equal certainty that seventy-one reach it from the southeast or east; 

 and of the remaining seventy-two species, mostly water-birds, 

 probably four-fifths come from the central Mississippi Valley. 



LIST OF WATER AND SHORE BIRDS OF THE PUGET 

 SOUND REGION IN THE VICINITY OF SEATTLE. 



BY SAMUEL F. RATHBUN. 



This region is a much favored resort of many of the species of 

 water birds whose habitat is the Pacific coast and this undoubtedly 

 is accounted for by the fact that within its boundaries are em- 

 braced the essential desiderata necessary to attract them, viz. 

 protection from the elements, an abundance of food and a most 

 equable temperature throughout the year. 



Its geographical location is likewise fortuitous being nearly in 

 the direct line of migration of the countless numbers of birds 

 whose summer home is the North Pacific and of these, thousands 

 use this region as a winter resort, finding here every requirement 



