. Birds in their relations to man; a manual of economic ornithology for the United States and Canada . SPINES ON ROOF OF {After Luras.) TONGUE OF RED-HEADED {After Lucaa.) bird of its rare beauty is worth seeing now and then, thoughwe may have to pay for the pleasure. One of the most notable illustrations of the value of wood-peckers has been l)rouglit to light through the investigationsof spruce insects in the Northeast by Dr. A. D. Hopkins,forest entomologist of the United States Department of Agri-culture. Dr. Hopkins found that great damage was being
. Birds in their relations to man; a manual of economic ornithology for the United States and Canada . SPINES ON ROOF OF {After Luras.) TONGUE OF RED-HEADED {After Lucaa.) bird of its rare beauty is worth seeing now and then, thoughwe may have to pay for the pleasure. One of the most notable illustrations of the value of wood-peckers has been l)rouglit to light through the investigationsof spruce insects in the Northeast by Dr. A. D. Hopkins,forest entomologist of the United States Department of Agri-culture. Dr. Hopkins found that great damage was being THE WOODPECKERS, KINGFISHERS, AXD CUCKOOS. 189 done by the spruce-destroying bark-beetle {Bendrodonuspiceaj)erda), but that its work was being largely checked bywoodpeckers, probably chiefly the Arctic Three-toed Wood-pecker and the Banded Three-toed Woodpecker, as thesespecies come from the far Xorth in winter and live innorthern New England in numbers. Dr. Hopkins writes:Woodpeckers are the inost important enemies of the bark-beetle, and appear to be of inestimable value to the spruce-timber in
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1916
