314 THE BIRDS OF MAINE 



Genus NUTTALLORNIS Ridgw. 



459. Nuttallornis horealis (Swains.). Olive-sided Fly- 

 catcher. 



Plumage of adults: above olive brown, becoming more clove brown or 

 fuscous on wings and tail ; throat, middle of belly and sometimes narrow 

 line in center of breast whitish ; each flank with a tuft of yellowish white 

 feathers ; upper mandible black, lower mandible paler with darker tip. Im- 

 mature plumage : wing coverts edged with ochraceous buff ; yellowish tinge 

 more pronounced below. Wing 4.10 ; culmen 0.65 ; tarsus 0.58. 



Geog. Dist. — North America ; breeding from the northern tier of states, 

 southward in the mountain regions, to British Columbia and the Saskatch- 

 ewan ; wintering in Central America, South America to Columbia and Peru. 



County Records. — Androscoggin ; taken May 7, 1897, and May 20, 1898, 

 near Lewiston, (Johnson). Aroostook; summer resident, rather common 

 along the Woolastook River Valley, (Knight). Cumberland; rare, (Mead); 

 common summer resident on islands of Casco Bay, (Swain). Franklin ; rare 

 summer resident, (Swain); common summer resident, (Sweet). Hancock; 

 common summer resident on the islands and inland as well, (Knight). Ken- 

 nebec; rare summer resident, (Dill). Knox; summer, (Rackliff). Oxford; 

 breeds rarely, (Nash). Penobscot; tolerably common summer resident, 

 (Knight). Piscataquis; common, breeds, (Homer). Sagadahoc; nesting 

 near Boothbay Harbor, June 17, 1896, (Noble). Somerset; common summer 

 resident of northern county, not rare in southern section, (Knight). Waldo ; 

 common summer resident, (Knight). Washington ; not uncommon summer 

 resident, (Boardman). 



The species arrives from the south from May 20 to May 25 

 and remains until late August or occasionally until September 

 15. It is a species of woodlands, frequenting the deepest 

 woods but usually being near some small clearing or along the 

 shores of some body of water. Individuals can usually be 

 heard crying "whip-you-see" and are then rather readily dis- 

 covered perched on some lofty commanding dead limb, tree or 

 stub. The eggs are laid from the middle to the last of June 

 with us. The nest is built on the top of a limb, usually in 

 a spruce, fir, pine or hemlock at a good elevation and well out 

 toward the end of a long horizontal limb. Only very except- 

 ionally are deciduous trees used as nesting sites. On the coast 

 where the trees are smaller the nests are of course lower down 



