344 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



large proportion of the food of this bird. Grasshoppers and 

 crickets (Orthoptera), which are eaten during every month from 

 October to April, form 24 per cent of the total volume of food, 

 and for October and November together these insect pests form 

 more than half of the food." (Judd, " The Food of Shrikes.") 



Dr. Judd gives a list of 17 species of our small birds that this 

 Shrike has been known to kill. 



Of the stomachs of 9 Northern Shrikes taken in Connecticut 

 between November 6th and March ist, examined by the author, 



I contained a mammal ; 4, birds ; 4, insects, chiefly grasshoppers ; 

 and I, feathers and seeds. 



By the Loggerhead Shrike, of which our Migrant Shrike is 

 a subspecies, 13 species of birds have been known to be killed; but 

 the studies of the Biological Survey show that birds constitute a 

 smaller proportion of its food than they do of its larger relative, 

 its diet being chiefly insects. Of the stomachs of 5 Connecticut 

 specimens of the Migrant Shrike taken between Oct. 2 and 

 Feb. 15, examined by the author, i contained a bird; 4, grass- 

 hoppers; and I, beetles. 



VIREOS. 



Vireonidcs. 



Insects in form of egg, larva, pupa, or adult are the proper 

 food of the Vireos, and are sought for industriously by them 

 over the branches and under the leaves of our trees during the 

 months they are with us. " Twenty-five Vireos were collected, 

 including 2 Warbling Vireos (Vireo gilvus), 10 White-eyed 

 Vireos {Vireo noveboracensis) , and 13 Red-eyed Vireos (Vireo 

 olivaceus) . Ninety-one per cent of their food consisted of insects, 

 and 9 per cent of fruit (mulberries and sassafras). Parasitic 

 wasps formed 2 per cent, ants and other Hymenoptera 6 per cent, 

 May-flies 4 per cent, caterpillars 15 per cent, bugs 17 per cent, 

 beetles 28 per cent, miscellaneous insects 8 per cent, and spiders 



II per cent. The Hymenoptera, other than ants, comprised joint- 

 worm flies, sawfly larvae, ichneumon flies, and bees of the genus 

 Halictus." 



" The bugs were stink-bugs (FodwMj) , leaf-hoppers (Jassidse), 

 and scale insects {Kermes). The Yellow-throated Vireo {Vireo 

 flavifrons) has been noted at Marshall Hall by Mr. William 



