2 2 University of Michigan 



though most are small. Also many of the higher mountains are flat 

 topped, and these tops are usually covered by large broken rocks. 

 Lichens are abundant on the rocks which remain long in one 

 position. However, the topography of interior Alaska north of 

 the Alaska Range is not rugged, but is mostly of a rolling type in 

 which rock exposures are few. 



Aerial habitat and association: 



Sayornis sayus. Say phoebe. .Summer (Osgood). 



Xuttallorin's borealis. Olive-sided flycatcher. Summer. 



Empidonax Irailli alnorum. Alder flycatcher. Summer (Osgood). 



HJrundo nistica erylhrogaster. Barn swallow. Summer. 



Pctrochelidon lunifrons hmifrons. Cliff swallow. Summer. 



Tachycinela thalassina Icpida. Northern violet-green swallow. Summer 



(Osgood). 

 Riparia riparia riparia. Bank swallow. Summer. 

 Wihonia piisilla pusilla. Wilson warbler. Summer. 

 Sa.xicola a'liaullic oeiiantlic. Wheatear. Summer. 



The aerial association in interior Alaska is made up of the 

 flycatchers, swallows, Wilson warbler, and wheatear, all of which 

 are birds securing food in the air. 



Burn habitat and association: 



Canachiles cdnadcnsis osgoodi. .\laska spruce grouse. Resident. 



Lagopus lagopus albiis. Willow ptarmigan. Winter. 



Bittco swahisoni. Swainson hawk. Summer. 



Surnia iilula caparoch. Hawk owl. Resident. 



Dryobatcs pubesccns nclsoni. Northern downy woodpecker, .\utumn. 



Picoides americanus fasciatus. Alaska three-toed woodpecker. Resident. 



Xuttallornis borealis. Olive-sided flycatcher. 



Perisareus canadensis fumifrons. .Alaska jay. Resident. 



Pinicola enudeator alascensis. Alaska pine grosbeak. Autumn. 



Loxia leucoplera. White-winged crossbill. Winter. 



Acanthis fivrnemanni cxilipes. Hoary redpoll. Winter. 



Acanlhis linaria linaria. Redpoll. Resident. 



Acanthis linaria holbwlli. HolboU redpoll. Winter. 



Pleclrophenax nivalis nivalis. Snow bunting. Winter. 



Zonotrichia gambeli. Gambel sparrow. Summer, breeding. 



Spizella monticola ochracea. Western tree sparrow. Summer. 



J unco hyemalis hyemalis. Slate-colored junco. Summer, breeding. 



Melospiza Uncolni lincolni. Lincoln sparrow. Summer. 



Bombycilla garnda pallidiceps. Bohemian waxwing. Summer. 



