356 



PROCEEDINGS OF THE ACADEMY OF [June, 



Jenkins W. E. [Blue Jay in Confinement.] Ornith. and Oologist, 

 9, No. 3. March, 1884, p. 36. 

 Principal foods are meat, beechnuts, and corn. 



The Birds of Ontario in relation to Agriculture. 

 Out. Dep. Agr., Toronto, 1901. 

 On p. 44 are the results, as to quantity of cutworms and earth- 

 worms, experimentally fed to a young robin. 

 Owen, D. E. Notes on a Captive Hermit Thrush. Auk, XIV, 

 No. 1, January, 1897, pp. 1-8. 

 Notes on quantity of earthworms and beef eaten. Worms from 

 manure hill refused, those from garden eaten. 

 Peckham, E. G. [Fowls Eating Argiope riparia]. Occas. Papers, 

 Xat. Hist. Soc. Wis., I, 1889, p. 72. 

 This deep black and brilliant yellow spider seems to lack "one 

 means of defence common among conspicuous creatures, i.e., 

 the possession of a nauseous flavor." "Some chickens, to 

 which she was offered, ate her with relish." 

 Reiff, W. Some Experiments on the resistance of Gypsy Moth 

 Eggs to the Digestive Fluids of Birds. Psyche, 17, No. 4, 

 August, 1910, pp. 161-164. 

 Eggs concealed in other food were fed to a German canary, a 

 chaffinch, a yellow hammer, a Japanese robin, a screech owl, 

 and a carrier pigeon. The eggs given to the first three birds 

 were put in pieces of bread. In each case part of them were 

 picked out and rejected. 

 For a more complete review of the various experiments in feeding 

 gypsy moth eggs to birds, see Auk, 28, No. 2, April, 1911, pp. 

 285, 286. 

 Scott, W. L. Baltimore Oriole. Ornith. and Oologist, 8, No. 11, 

 November, 1883, p. 86. 

 "He is particularly fond of hard-boiled egg, bread, and finely 

 chopped meat." 

 Stickney, J. H., and Hoffmann, R. Bird World, Boston, 1898. 

 An unconfined yellow-throated vireo took cankerworms and 

 many black ants (pp. 106-112). 

 Treadwell, D. [The Food of Young Robins.] Proc. Boston Soc. 

 Nat. Hist., VI, 1859, pp. 396-399. 

 Discusses amount of earthworms and beef eaten per day. 

 Weed, C. M.,- and Dearborn, N. [Food of a Captive Crow.] 

 Birds in Their Relations to Man, 1903, pp. 61, 62. 

 On quantity of fish consumed. 

 Wueelock, I. G. Nestlings of Forest and Marsh, Chicago, 1902. 

 Young bluebirds were fed yolk of hard-boiled eggs, cracker crumbs, 

 and earthworms (p. 34). 



Summary. 



^m the writer's point of view, three main conclusions regarding 

 ?rimental tests of the efficiency of protective adaptations 



