IOWA ACADEMY OF SCIENCES. 93 



1900. Review Solar Observations. — P. A., Volume 10, No. 5. 



1901. Review Solar Observations. —P. A. , "Volume 10, No. 7. 



1896 to 1902. Daily record contributed to Solar Section British Astronomical Association, 

 and results published in B. A. A. Memoirs. 



Abbreviations. —Mon . Rev. I. W. and C. S. , Monthly Review of the Iowa Weather and 

 Orop Service, Des Moines. Pub. A. S. P. , Publications of the Astronomical 

 Society of the Pacific, San Francisco, Cal. P. A. , Popular Astronomy, North- 

 field, Minn. 



THb] DUCK HAWK -(FALCO PEREGRINUS ANATUM) 



-m IOWA. 



BY B. H. BAILEY. 



Few birds of the United States are more widely and gen- 

 erally distributed, and probably no one species is more iso- 

 lated as to the individual pairs than the Duck Hawk, (Falco 

 peregrinus anatum). 



The Duck Hawk, Great Footed Hawk, Peregrine Falcon, 

 etc., as he is variously called, is a "Noble Falcon," one of 

 the really blue blooded Falconidae. Some years ago I met 

 this species in Linn county, and the pair with which I 

 became acquainted having been observed before and since 

 by my friend, Mr. Geo. Burge, of Mt. Vernon, I have 

 obtained largely from him the following facts concerning 

 these birds. In the south-eartern part of Linn county^ and 

 extending to the north-eastern part of Johnson county, the 

 Cedar river has cut its channel through the limestone hills 

 of this region , and has left on either side cliffs known 

 locally as the Palisades, raging from a few feet to nearly 

 100 feet in height. 



On the face of these rocks grow lichens of various hues, 

 and bushes interspersed with stunted cedar trees. In 

 many places weathering has produced fissures and crannies 

 which have been for years the resort of the Turkey Buz- 

 zards (Cathartes aura) and an occasional Gt. Horned Owl 

 (Bubo virginianus). Here in 1892 Mr. Burge first noted 

 the presence of the Duck Hawk. 



