NATURAL HISTORY. 



419 



Common 



Sea Gull." Less numerous than preceding, but found in similar 

 localities and at much the same times. 



220. Hkynchojjs oiigra, Linn. — Black Skimmer. A rare, perhaps 

 accidental, visitor during the summer. (Specimens seen by ourselves 

 September 8, 1858, on the Potomac river.) 



22 L Graculus dilophus, Gray. — Double-crested Cormorant. A 

 specimen has been detected. 



222. Colymhus torquatus, Brunn. — Great Northern Diver. "Loon." 

 Occasionally seen during the winter. 



223. FocUceps (Pedetaithya) holholli, Reinhardt. — Red-necked 

 Grebe. Not uncommon on the Potomac during the winter months. 



224. Podiceps cristatus, Lath. — Crested Grebe. " Water Witch." 

 Found on the Potomac during the winter months. 



225. Podiceps (Bytes) cornidus, Lath. — Horned Grebe. 

 on Potomac in winter. 



226. Podilymhus podiceps, (Linn.) Lawr. — "Dipper." 

 Witch." Abundant on the Potomac in winter. (We have not been 

 able to ascertain the precise times of arrival and departure of the 

 five preceding birds.) 



The birds included in the preceding catalogue are now presented 

 in sections to show at a glance those which are permanent, or summer, 

 or winter residents, and those which are regular or accidental visitants. 

 It is somewhat difficult to make out such an analytical table, from the 

 fact that of some species undoubtedly to be classed as spring and 

 autumn visitants a few individuals breed or pass the winter in secluded 

 situations, and vice versa of those which regularly pass the summer or 

 winter with us, many are more abundant in the spring and fall. We 

 have endeavored to place each species in the class under which it most 

 naturally falls, indicating irregularities of this sort in foot notes. 



"Water 



Cathartes aura, 

 Falco sparverius. 

 Accipiter cooperi. 

 Accipiter fuscus. 

 Buteo borealis. 

 Buteo lineatus. 

 Buteo pennsylvanicus. 

 Circus hudsonius. 

 Haliretus leucoceplialus. 

 Scops asio. 

 Bubo virg-inianiis. 

 Otns wilsouianus. 

 Bi-acliyotiis cassini. 

 Syrninin aehulosum. 

 Picus villosus. 



A. 



PERMANENT RESIDENTS. 



Picus pubescens. 

 Spliyropicus varius. 

 Hylatomus pileatus. 

 Centurus carolinus. 

 Colaptes auratus. 

 Turdus migratorius. 

 Sialia siabs. 

 Ampebs ccdrorum. 

 Thriotliorus ludovicianus, 

 Certliia americana. 

 Sitta carolinensis. 

 Lophophaues bicolor. 

 Clirysnmitris tristis. 

 Spizella pusilla. 

 Melospiza melodia. 



B. 



Cardinalis virginianus. 

 Agelaius plioeniceus. 

 Sturnella magna. 

 Corvus araericauus. 

 Corvus ossifragus. 

 Cyanura cristata. 

 Zenaidura carolinensis. 

 Bouasa umbi'lhis. 

 Meleagris gallopavo. 

 Ortyx virginianus. 

 Botaurus lentiginosus. 

 ^gialitis vociferus. 

 Philohela miuor. 

 Aix spousa. 



Falco columbarius. 

 Aquila canadensis. 



WINTER RESIDENTS. 



Ectopistes migratoria. 

 Chaiilelasmus streperus. 



Erismatura rubida. 

 Bucepbala americana. 



