. 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 . Fig. 29. —Warblers destroying a swarm of plant lice. of the insects hadscattered to neigh-boring trees, and afew of the birdswere pursuing themthere; but most ofthe latter remainedat or about the placewhere the aphisswarm was first seen, and they w^ere still there at swarm decreased rapidly all day, until just before sunsetit was difiicult to find even a few s}&g
. 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 . Fig. 29. —Warblers destroying a swarm of plant lice. of the insects hadscattered to neigh-boring trees, and afew of the birdswere pursuing themthere; but most ofthe latter remainedat or about the placewhere the aphisswarm was first seen, and they w^ere still there at swarm decreased rapidly all day, until just before sunsetit was difiicult to find even a few s}>ecimens of the birds remained until it was nearly dark, for they werestill finding a few insects on the higher branches. The plantlice I had secured for identification Avere destroyed or lib-erated during the night, probably 1)y a deer mouse whichfrequented the camp ; so the next morning at sunrise I wentto the trees to look for more specimens. The birds, how-ever, wxre there before me, and I was unable to find a singleaphis on the trees. The last bird to linger Avas more suc-cessful than I, for it was still finding a few ; but it soon gaveup the effort, and left for more fruitful fields. Probably af
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Keywords: ., bookcentury1900, bookdecade1900, bookidusefulbi, booksubjectbirds
