. Bulletin - Biological Survey. Zoology, Economic. 32 WOODPECKEES IN RELATION TO TEEES. Geay biech (Betula populifolia).—Department of Agriculture grounds, District of Columbia: White or canoe biech (Betula alba).—This tree is frequently and seriously injured by sapsuckers (PI. V, fig. 2). Weed and Dearborn say that "hundreds of punctures" are "made in white birches" and Hopkins notes that the sapsucker injures or kills young trees. Bolles, in writing of a sapsucker "orchard," states that "The tree in use last year was nearly dead. Two neighboring birches sho
. Bulletin - Biological Survey. Zoology, Economic. 32 WOODPECKEES IN RELATION TO TEEES. Geay biech (Betula populifolia).—Department of Agriculture grounds, District of Columbia: White or canoe biech (Betula alba).—This tree is frequently and seriously injured by sapsuckers (PI. V, fig. 2). Weed and Dearborn say that "hundreds of punctures" are "made in white birches" and Hopkins notes that the sapsucker injures or kills young trees. Bolles, in writing of a sapsucker "orchard," states that "The tree in use last year was nearly dead. Two neighboring birches showing scars of earlier years were quite dead. . Orchard No. 4 . . con- sisted of a large number of dead and a few living trees. . The part of the orchard in use was a birch, from whose roots rose 4 major trunks quickly subdividing into 15 minor stems each ris- ing to a height of over 30 feet. All of the 15 trunks were dead or dying. Only 7 of them bore ; "Hermit," speaking of a sapsucker "orchard," says: "The . . canoe birches were dead or dying. Many . . had been broken off by the wind just below the belt of ; Horsford says: "I have seen the white birch cut off, or rather broken off, 20 feet from the ground, in more cases than I can number, all his work. . The birch tree in- variably ; And Gar- field notes that "This bird invariably attacks what appears to be perfectly sound and healthy bark. Great injury is inflicted by these attacks. . The white birch is frequently ; George H. Selover writes that sapsuckers have often killed silver birches at Lake City, Minn, (letter, 1885). The tree is attacked in Maine also (H.). White biech (Betula pendula).—Department of Agriculture grounds, District of Columbia. Cheery birch (Betula lenta).—West Virginia (H.). Yellow birch (Betula luted).—The sapsucker "is partial to the . . yellow birch" (Bendire), and it "injures or kills young
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