118 



Family FALCOWID^. 

 Genus Falco AucL 



173. F, communis vav. anatum. Bonap. Ducic Hawk. Not un- 

 common ilurinii; tlie migrations. Formerly a I'are summer resident. 



174. F. lithofalco var. columbarius Linn. Pigeon Hawk. 

 Abundant migrant, from March 20th to May 1st, and from September 

 loth to October 5th. Rare summer resident. 



175. F. sparverius Linn. Spai:iiow Hawk. Abundant migrant 

 and rather common summer resident. Arrives early in March and 

 departs the last of September and first of October. 



Genus Pandion Sav. 



176. P. halisetus var. carolinensis (Gmel.). Fisii Hawk. Not 

 uncommon during March and April in spring, and during September 

 and October in fall. Some seasons this species is quite numerous, 

 especially along the Lake shore. 



Genus Nauclerus Vig. 



111. IN", forflcatus rddrj. Swaixow-tatled Hawk. According 

 to Kennicott (111. Agl. Kept., 1853-4) this beautiful species was once 

 common in this vicinity, but was rare at the time he wrote. I can 

 testify to its scarcity at present, only two or three instances of its 

 occurrence within the last twenty years liaving been ascertained. 



Dr. Hoy has noted Ictinia mi^sLssippiensis in Wisconsin, Init I have 

 no record of its occurrence in this vicinity, although it may yet be 

 observed here. 



Genus Circus Lac. 



178. C- cyaneus var hudsonius (^Linn.). IMausii Hawk. Com- 

 mon in the marshes and on prairies during the migrations; March 

 2Dtli to April 15th, and during October and November. Said to breed 

 by Kennicott, but I have never seen a specimen here in the breeding 

 season. 



Genus Nisus. 



179. U". fuscus Kemp. Siiaiu'-siiixnkd Hawk. Abundant during 

 migrations; September 15Lh to October 30th, and April 15th to May 

 lOili. A few remain to breed. 



180. H". cooperi Bonap. CoorEi:'s Hawk. Common summer 

 resident. Arrives the last of Ajiril and departs the last of September 

 or first of October. 



Genus Astur Lac. 



181. A. palumbarius var. atricapillus (^Wils.). Goshawk. 



