...In May, when nesting, it often sings an ecstatictwittering warble on the wing... 
Frank M. Chapman 「What Bird is That?」
...A plaintivephee-eur; a short, plaintive, twittering warble...
Frank M. Chapman 「Color Key to North American Birds」
...Call, chip; song, a reedy warble resembling in tonethat of a Long-billed Marsh Wren...
Frank M. Chapman 「Color Key to North American Birds」
...In the United States the other warble fly, H...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The young warble is about 1 mm...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Theycause swellings about the size of pigeons' eggs, each swelling having a smallhole in the center, which has been punctured in the skin by the warble toenable it to breathe...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...If this procedure is carefully carriedout there will be a noticeable diminution of warbles the following year, and ifpersisted in the warble can be almost if not completely eradicated...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Cattle may be treated during the summer with fly repellents ()to keep off the warble flies...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Thewhite-eyes are no longer content to utter their usual cheepingcall, the cocks give vent to an exquisite warble and therebyproclaim the advent of the nesting season...
Douglas Dewar 「A Bird Calendar for Northern India」
... long-tailed thrush, or thrasher, delightsin a high branch of some solitary tree, whence itwill pour out its rich and intricate warble for anhour together...
John Burroughs 「Bird Stories from Burroughs」
...The larvae of the warble fly (Oedemagena tarandi), foundbeneath the skin of the Caribou, are relished by the Eskimos, beingeaten apparently while alive and raw...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...The song was continuous—a softmelodious warble, full of sweetness and suggestion;but suggestion of June meadows and a summer sunrise,rather than of snow-packed evergreens andChristmastide...
William J. Long 「Ways of Wood Folk」
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