3(38 USEFUL BIRDS. 



The American Long-eared Owl {Asio ivilsonianus) is a 

 bird of similar size and shape, but with a trifle larger head, 

 and very long ear tufts rising from near the middle of it. 

 It is dark brown above and light l)elow. This is a long- 

 winged bird of the woods, a night hunter, hiding in thick 

 foliage of coniferous trees by day. It is a great killer of 

 wood mice and nocturnal insects, and kills a few birds. 



The Screech Owl [Otu.s asio a,'<io), smallest of eared 

 Owls, is hardly as large as a (^uail. It has two color })hases 

 that are not attributable to age or sex, some individuals 

 being reddish in color, while others are gray. Its wailing 

 cries are frequently heard about orchards in towns and 

 villages, as Avell as in the woods, and it commonly nests 

 in hollow orchard trees. This is one of the most useful of 

 all Owls. It is very destructive to moths, caterpillars, and 

 beetles, as well as wood mice and field mice. In winter it 

 enters l:>arns and sheds, where it kills mice, and sometimes 

 Avhen driven by hunger it kills and eats Doves. During 

 the breeding season it kills some small birds, particularly 

 if mice are not plentiful enough to furnish an abundance of 

 food for its young. 



The Saw-whet Owl {Orypioglaux acadka acadica), a 

 little brown Owl, with no ear tufts, is the least of all the 

 native Owls of Massachusetts. It is rather uncommon, but 

 very useful, as it feeds mainly on mice and insects and 

 rather rarely on birds. 



The Barn Owl (Aluco pratincola), perhaps the most use- 

 ful of the family, is rare here. 



On the whole, while Owls must be ranked among the ene- 

 mies of small birds, they usually do so much more good than 

 they do harm that only under exceptional conditions can they 

 be regarded as injurious, although the Horned Owl is com- 

 monly considered pernicious because of its destruction of 



game . 



Crows and Jays. 



The Crows, Jays, and Magpies have acquired a world-wide 

 reputation as nest robbers. The common Crow and the Blue 

 Jay manage to live up to their reputation. ]My report on 

 the Crow and some additional notes on the destructiveness 



