46 



BIRDS OF A MARYLAND FARM. 



Feeding of a brood of house urens — Continued. 



A.M. 





A. M. 





9.45. 



Grasshopper. 



11.02. 



Mav-fly. 



9.46. 



CutAYorm. 



11.02J 



May-fly. 



9.50. 



Grasshopper ( Mela noplus ) . 



11.15. 



Green caterpillar. 



9.52. 



Saw-fly larva (?). 



11.20. 



Miller (noctuid). 



9.54. 



Miller (noctuid). 



11.21. 



Black chrysalis. 



9.55. 



Heliothis dipsaceus. 



11.22. 



Saw-fly larva (?). 



9.57. 



Heliothis dipsaceus. 



11.25. 



Spider. 



10.00. 



Spider. 



11.26. 



Grasshopper {Melanoplus) 



10.01. 



Heliothis dipsaceus. 



11.30. 



Heliothis dipsaceus. 



10.05. 



Black chrysalis. 



11.30J. 



May-fly. 



10.08. 



Cutworm . 



11.32. 



Spider. 



10.15. 



Spider. 



11.34. 



Grasshopper {Melanoplus) 



10.16. 



Caterpillar. 



11.34i 



Saw^-fly larva (?) . 



10.20. 



May-fly. 



11.36. 



Acronycta ohlinita. 



10.23. 



Spider. 



11.39i 



May-fly. 



10.26. 



Clay-colored grasshopper. 



11.47. 



Cutworm. 



10.29. 



Clay-colored grasshopper nymph. 



11.48. 



May-fly. 



10.30. 



Acronycta ohlinifa. 



11.50. 



Cutworm. 



10.35. 



Green caterpillar. 



11.51. 



Heliothis dipsaceus (2). 



10.38. 



Heliothis dipsaceus. 



11.59. 



Heliothis dipsaceus. 



10.41. 



Heliothis dij^saceus. 



p. M. 





10.46. 



Clay-colored grasshopper. 



12.02. 



Heliothis dipsaceu.s. 



10.48. 



Spider. 



12.06. 



Spider. 



10.50. 



Miller (noctuid). 



12.07. 



Heliothis dipsaceus. 



10.52. 



Clay-colored grasshopper nymph. 



12.09. 



Cutworm. 



10.54. 



Miller (noctuid). 



12.11. 



Spider. 



The mother wren thus made 110 visits to her little ones in four 

 Jiours and thirt3"-seven minutes, and fed them 111 insects and spiders. 

 Among these were identiiied 1 white grub, 1 soldier bug, 3 millers 

 (Noctuidfe), 9 spiders, 9 grasshoppers, 15 May-flies, and 31 caterpil- 

 lars. On the following day similar observations were made from 9.35 

 a. m. till 12.10 p. m., and in the three hours and five minutes the young 

 were fed 67 times. Spiders were identified in 1 instances, grasshop- 

 pers in 5, Ma^^-flies in IT, and caterpillars in 20. 



Previous to the observation of this brood of wrens a collection of 

 adult and nestling wrens was made. Their food is shown in diagrams 

 (PI. IX, fig. 1). 



Barn Swallow. — ^The food of seven nestling barn swallows (fig. 16) 

 collected June 17, 1899, consisted of beetles ( Ontliopliagus ]yennsyl- 

 vanicus.^ Ajyhoditcs inquinatus^ Agrilus sp., and Rhynchophora), para- 

 sitic wasps {Chalcis sp. , IchneumonidEe and Tiphla inornatcL) and flies 

 (Leptid^e, Ohrysops sp., Lucilla csesar and other Muscidee), bugs 

 (Capsidse), May-flies, and snails. The vertebras of some small fish, 

 which ma}^ have been taken to aid the gizzard in digesting the food, 

 were also found in the stomachs. 



Bank Swallow. — An examination was made of the stomachs of 83 

 young bank swallows collected a few miles above Marshall Hall from 



