. Michigan bird life : a list of all the bird species known to occur in the State together with an outline of their classification and an account of the life history of each species, with special reference to its relation to agriculture ... . 5G6 MICHIGAN BIRD LIFE. spicuoLis materials. The eggs are three to five, most often four, and arepure white, sparsely spotted with brown and black. They average .81by .56 inches. Very frequently Cowbirds eggs are found in the nest andthe Vireo frequently deserts its nest on account of this intruder. Wilson Flagg speaks of this bird as the Preacher and des
. Michigan bird life : a list of all the bird species known to occur in the State together with an outline of their classification and an account of the life history of each species, with special reference to its relation to agriculture ... . 5G6 MICHIGAN BIRD LIFE. spicuoLis materials. The eggs are three to five, most often four, and arepure white, sparsely spotted with brown and black. They average .81by .56 inches. Very frequently Cowbirds eggs are found in the nest andthe Vireo frequently deserts its nest on account of this intruder. Wilson Flagg speaks of this bird as the Preacher and describes hissong as follows: His style of preaching is not declamation. Thoughconstantly talking, he takes the part of a deliberative orator who explainshis subject in a few words and then makes a pause for his hearers to reflectupon it. We might suppose him to be repeating moderately, with a pausebetween each sentence you see it—you know it—do you hear me?—do youbelieve it? All these strains are delivered with a rising inflection at theclose and with a pause as if waiting for an answer. B cknell calls hima most untiring vocalist, maintaining his song almost uninterruptedly. Fig. 133. Red-eyed Vireo on Bird Lore. Courtesy of Frank M. Chapman. through the summer and only relinquishing it in September from thefirst to the tenth. According to Ridgway It is probable that we have no more beneficialbird than this species, noxious and destructive insects of numerous kindsconstituting its principal food (Birds of IlHnois, p. 182). All the vireosare similar in their feeding habits and spend most of their time gleaninginsects from the foliage of shrubs and trees. Probably they consumemore spanworms and leaf-rollers than any other group of birds, but theyare not slow to avail themselves of any unusual supply of insects andthey eat beetles, bugs, and even grasshoppers apparently with equalreadiness and impartiality. Professor Aughey of Nebraska found thatduring years of invas
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