378 Mr. G. A. K. Marshall on Birds as a Factor in the 



to catch a small butterfly : W. Dearden, quoted by 

 Packard, /. c. (U.S.A.). 



35. Conto^ms virens, L. (Wood Pewee). (a) Stomachs 

 contained insects, including butterflies : Dr. B. H. 

 Warren, " Birds of Pennsylv.", p. 194. — {h) Observed 

 to eat Colvis 'pliilodice, Argynnis myrina, Grapta inter- 

 rogationis, Chrysophaniis americanus, other Lycaenidae 

 and Satyrinae: Gentry, I. c. ii, pp. 64 and C5. 



o(3. Empidonax acadicus, Gm. (Small Green-crested Fly- 

 catcher), (a) Stomachs contained Satyrinae and 

 Lycaenidae: Gentry, I.e. ii, p. 67. — {h) "Its food 

 consists of insects during spring and summer, such 

 as moths, wild bees, butterflies, and a variety of small 

 kinds": J. J. Audubon, "Ornith. Biogr.," ii, p. 257. 



37. Chordeik'S virginiaiuis, Gm. (Virginian Goatsucker). 



Stomachs contained Argynnis ajihroditc, Pyrameis 

 cardni, Chrysophanus amei^icaniis, and many of the 

 Satyrinae and Lycaenidae ; the young are fed also on 

 Fieris oleracea : Gentry, I. c. ii, pp. 95 and 96. 



38. Chaetura pelagica, L. (Spine-tailed Swift). The young 



are fed on Lycaenidae, etc. ; the old birds also eat 

 Argynnis ajjhrodite and Pyrameis cardui : Gentry. 

 /. c. ii, pp. 101 and 102. 



39. Coccyzvs americanus, L. (Yelhnv-billed Cuckoo). («) 

 *' They feed on insects such as caterpillars and butter- 

 flies, as well as on berries " : J. J. Audubon, " Ornith. 

 Biography," i, p. 19. — (li) Stomachs contained Pieris 

 rapae and Lycaenidae : Gentry, /. c. ii, p. 118. 



40. Coccyzns crythrojjhthalmus, Wils. (Black-billed Cuckoo). 



Stomachs contained Lycaenidae : Gentry, I.e. ii, p. 114. 



41. Dendrocopits viUosus, L. (Hairy Woodpecker). Stomachs 



contained Lycaenidae: Gentry, /. c. i, p. 130. 



42. Melanarpes crythroccplialus, L. (Red - headed Wood- 



pecker). Stomachs contained Lycaenidae : Gentry, 

 /. c. ii, p. 158. 



43. Fcdco sparvcrius, L. (American Kestrel), (a) Stomachs 



contained "a few of the Papilionidae and Sphin- 

 gidae": Gentry, /. c. ii, p. 252. — (&) A butterfly was 

 found in the stomach of a bird shot at Cataract Creek, 

 Arizona: Dr. A. K. Fisher, "Hawks and Owls of 

 the U. S.", 1893, p. 126 (U. S. Dept. Agr., Div. Econ. 

 Ornith., Bull. iii.). 



44. Fcdco communis, Gm. (Peregrine). Stomachs con- 



tained Papilionidae : Gentry, /. c. ii, ]i. 242. 



