272 List of Birds found in Cumberland County, Penn. 



179. Aix sponsa, Linn.,f Summer Duck. 1840, March 4; 1841, 

 March 30 ; 1842, March 17 ; 1843, April 6. Very common ; rare in 

 winter. 



180. Aythya erythrocephala, Bon., Red-headed Duck. Very rare ; 

 migratory. 



181. Fuligula marila, Linn., (small var.,) Black-headed Duck. 1841, 

 April 19; 1842, March 17; 1843, April 11. Abundant; migratory. 



182. Fuligula refitorques, Bon., Ring-necked Duck. 1843, March 

 23. Not common ; migratory. 



183. Clangula Americana, Bon., Goldfn-eyed Duck. Abundant in 

 winter ; migratory. 



184. Clangula albeola, Linn., Buffel-headed Duck. Abundant in 

 spring and autumn. Rarer in winter. 



185. Harelda glacialis, Linn., South Southerly. Very rare ; migra- 

 tory. 



186. Erismaturarubida,Wils., Ruddy Duck. 1841, April 17. Rather 

 rare ; migratory. 



187. Merganser Castor, Linn., Goosander. Abundant ; breeds in the 

 adjoining county of Perry. 



188. Merganser serrator, Linn., Red-breasted Merganser. Very 

 rare ; migratory. 



189. Merganser cucullatus, Linn., Hooded Merganser. 1840, April 

 15; 1842, April 27; 1843, April 11. Abundant; breeds in Perry 

 County. 



190. Hydrochelidon nigrum, Linn., Black Tern. Seen once in au- 

 tumn ; migratory. 



191. Xema Bonapartii, Rich., Bonaparte's Gull. Rare ; migratory. 



192. Sylbeocyclus Carolinensis, Lath.,f Carolina Grebe. 1840, 

 April 2; 1841, April 1; 1842, March 28; 1843, April 11. Abun- 

 dant ; migratory. 



193. Podiceps cornutus, Lath., Horned Grebe. Rare; migratory. 



194. Colymbus glacialis, Linn., Loon. 1841, April 13 ; 1842, May 

 23. Common ; migratory. 



Besides the above, found in the immediate vicinity of Carlisle, 

 the following have been seen in the eastern border of Cumberland 

 County, on the Susquehanna River. 



195. Squatarola Helvetica, Linn. 



196. Limosa fedoa, Vieill. 



197. Cygnus Americanus, Sharp. 



198. Oidemia fusca, Linn. 



199. Aythya Vallisneria, Wils. 



200. Falco peregrinus, Linn. 



201. Larus, (a large species.) 



