. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds . )ine needles, and then either alightedupon it and fed, or passed on to another. I examined. 162 USEFUL BIRDS. the needles after the Kinglets had left them, and could findnothing on them ; but when a bird was disturbed before it hadfinished feeding, the spray from which it had been driven wasinvariably found to be infested with numerous black specks,the eggs of plant lice. Ev
. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds . )ine needles, and then either alightedupon it and fed, or passed on to another. I examined. 162 USEFUL BIRDS. the needles after the Kinglets had left them, and could findnothing on them ; but when a bird was disturbed before it hadfinished feeding, the spray from which it had been driven wasinvariably found to be infested with numerous black specks,the eggs of plant lice. Evidently the l)irds were cleaningeach spray thoroughly, as far as they went. Since the above was written several of these infested sprayshave been sent to Prof. F. E. L. Beal of the BiologicalSurvey, who submitted them to Mr. Pergande of the Bureauof Entomolog3% who says that they are the eggs of a plantlouse of the genus Lachnus, and in all probability LacJinussirohi, the white pine louse. The pines are considerablyinfested, and several pairs of Kinglets have been seen feed-ing upon the eggs. Again since the above was written I have had occasion toobserve the work of Kinglets in our home grove of whitejnne. For the past two years certain })lant lice or bark licethat infest these trees have been increasing
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1913
