. Bulletin. Animals -- United States; Birds -- United States. 72 POOD HABITS or THE GROSBEAKS, The codling moth is accessible to the grosbeak in two stages of its development, namely, when the larvae are seeking a place to hibernate or pupate, as the case may be, and when they are in the chrysalis stage. By no means all of the birds examined had access to the species, yet 25 were successful in finding the pupae or larvae, and secured from 1 to 29 individuals, averaging about 5 each. It ap- pears, therefore, that the grosbeak makes good use of its limited op- portunities, and we agree with Prof
. Bulletin. Animals -- United States; Birds -- United States. 72 POOD HABITS or THE GROSBEAKS, The codling moth is accessible to the grosbeak in two stages of its development, namely, when the larvae are seeking a place to hibernate or pupate, as the case may be, and when they are in the chrysalis stage. By no means all of the birds examined had access to the species, yet 25 were successful in finding the pupae or larvae, and secured from 1 to 29 individuals, averaging about 5 each. It ap- pears, therefore, that the grosbeak makes good use of its limited op- portunities, and we agree with Professor Beal" that the " bird that helps to destroy this * * * insect, the curse of * * * apple culture, will be hailed as a blessing in spite of any shortcomings it may ; Second in importance only to the above pest are aai Fig. 34. Codling moth (Carpocapsa pomonella). (Prom Simpson, Bureau of Entomology.) The spring cankerworm {Paleacrita vernata^ fig. 35), which is re- sponsible for a great deal of damage in apple orchards, constitutes 6 percent of the grosbeak's food in May. ^Miile this amount is not large, it is nevertheless worthy of note, since all of it is consumed wdien the earliest broods are developing. Only one other order of insects contributes largely to the sub- sistence of the black-headed grosbeak—the true bugs, Heteroptera- Homoptera. Among minor items of the order the Heteroptera col- lectively form percent of the diet, plant bugs, together with members of the squash-bug and stink-bug families and unidentified forms, being eaten by 18 birds. A miscellaneous assemblage from o Yearbook Dept. Agr., 1904, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Biological Survey. Washington : G. P. O.
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