24 



BIRDS OF ILLINOIS. 



II. Characteristic Features of the Avikalxa of the State. 



General Remarks. Observntiou-s iu many sections of the State 

 from which wo as yet have no data, and also more extended inves- 

 tigations in those sections already explored, are necessary before 

 we can have an accurate knowledge of the distribution of the spe- 

 cies within our limits. At present we know the subject merely in 

 outline, and what we assume to know is undoubtedly subject to 

 greater or less modification — according to the species involved — in 

 the light of future information. The following tables are, therefore, 

 to be considered as provisional, and as expressing merely the 

 author's present knowledge of the subject, based in part on his own 

 explorations, but to a greater extent on the published records of 

 other observers. 



•ed in Winter over the greater por- 



ir Winter residents. 



Melaoorpes caroliDus. 

 Melanerpes crythroeuphalus. 

 Colaptes auratus. 

 Aslo wllsonianus. 

 Aslo acclpitrinus. 

 Nyctala aeadica. 

 Mp(ta.soops a.sio. 

 Bubo virelnianus. 

 Syrnium nobulosuin. 

 Falco pereerinus. 

 Fnlco oolumbarlus. 

 Falco sparvorlu8. 

 Circus hudsonlus. 

 Aocipitor atricaplllus. 

 Acclplter oooperi. 

 Accipltorivelox. 

 Buteo borealis. 

 Butco lineatus. 

 Butoo pennsylranicus. 

 Archibuteo sancti-jobannls. 

 Aquila ohrysaitos. 

 HaliiBOtus leucoccphalus. 

 Ectoplstos mlBratorla, 

 Melea^ris eallopavo. 

 Bonasa umbellus. 

 Tympanuchus pinnatua. 

 Ooliniis vlrcinianus. 

 Ardea hurodlim. 

 Olor buccinator. 

 Olor columblanus. 

 Chen byporboreua. 

 Chen cojruloscens. 

 AnserKumboli. 



