. Food habits of the grosbeaks . FiG. 14.—Rose beetle (Macrodactylus sulispinosus). (Piom Riley, Bureau of Entomology.) crested flycatcher, redheaded woodpecker, and cardinal, the last-named being one of the most important of their enemies. Four ofthe -birds examined during the present investigation had eaten rose-beetles, each of them^taking several, and on July 5, 1906, the writerwatched a brood of young which were being fed rose-chafers, remains. Fig. 15.—Flower eating scarabffiid (Euphoria inda). (From Ciiittenden, Bureau of Entomology.) of 17 being recovered from ejecta. These facts indic
. Food habits of the grosbeaks . FiG. 14.—Rose beetle (Macrodactylus sulispinosus). (Piom Riley, Bureau of Entomology.) crested flycatcher, redheaded woodpecker, and cardinal, the last-named being one of the most important of their enemies. Four ofthe -birds examined during the present investigation had eaten rose-beetles, each of them^taking several, and on July 5, 1906, the writerwatched a brood of young which were being fed rose-chafers, remains. Fig. 15.—Flower eating scarabffiid (Euphoria inda). (From Ciiittenden, Bureau of Entomology.) of 17 being recovered from ejecta. These facts indicate that thecardinal is so fond of the rose-beetle as to capture it wheneverpossible. This habit of the bird, together with its inroads upon thevine-chafers of the family, are of considerable economic in importance among beetles in the diet of the cardinalgrosbeak are the bronzy wood-borers (Buprestidse), which compose INSECT FOOD OF CARDINAli. 21 percent of the subsistence, being eaten by 31 birds. In the larvalstate these beetles excavate tunnels in trees and do immense da^ species were identified in stomachs of the redbird, namely, thelocust borer {Agrilus egenus) and another {Dicerca ohscura) whichbores into various deciduous trees. The beetles of this family seemto be a regular item of diet of all kinds of grosbeaks, and we may besure that their destruction is highly beneficial. The rather similar appearin
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