196 The Wilson Bulletin — No. 09. 



iiiteiiclins to nest there, Imt evidently left liefoie doing so. Tliere 

 are numerous records of single individuals in the region of Oberlin, 

 moFt of tlieni falling in the winter season. Whenever it has been 

 found eating anything investigation has revealed its catch to have 

 bean a Tree Sparrow. Undoubtedly it catches mice when they are 

 to be found. 



97. FaJco sparvcrius. — Sparrow Hawk. 



Our commonest hawk. It is often as common in winter as the 

 rest of the year, but some winters only a few remain. Such 

 scarcity is coincident with a scarcity of field mice. In summer this 

 hawk feeds extensively upon grasshoppers. There is a little evi- 

 dence that a small northward migration occurs about the first of 

 April. At least two pairs regularly breed east of the Lake Labora- 

 tory on the sand spit, and are likely to remain there during the 

 winter. One pair has ne-ted in the cupola of Council Hall, just 

 north of the Oberlin campus, for at least twenty years. I have no 

 records of this hawk for any of the islands. 



98. FancUon haHacUis carolinensis. — Osprey. 



Records of its occurrence at the marshes are occasional. It vis- 

 its the Oberlin Waterworks reservoir pretty regularly from the mid- 

 dle of April to the tenth of May. It was not recorded in 1906. 

 There are no svmuner records even for the islands, so that it does 

 not seem to breed in tl.e region. Usually only a single bird is seen, 

 but occasionally there will be two together. 



99. Aluco pral iiicola. ^-Bnvn Owl. 



There are four records as follows: A male, taken in Oberlin by 

 E. Ros^e, March 17, 189], the first record; probably a male taken in 

 a barn in New Oberlin by I. H. Squires, December 20, 1898; one 

 taken in the Oberlin cemetery by Tillotsou, April 3, 1907 ; one seen 

 at R.ve Beach by the writer. May 14, 19C9. Whether there is an in- 

 crease of this owl in the region remains to be seen. Apparently 

 there is a tendency to an increase in other parts of the state. 



100. Asio icilsoiiianiis.- — Long-eared Owl. 



None have been observed except in the Oberlin quadrangle. Tliere 

 it is to be found in suitable places the year through in small num- 

 bers. In the winter it may le found perched in evergreen trees, or 

 trees to which the dry leaves are still clinging, usually well within 

 cover of the gorges. Groups of half a dosen birds in one tree are 

 often met with. At the nesting season they go out into the larger 

 woods in pairs, nesting either in open deserted crows' nests or in 

 hollow trees. 



