This thing between the cowbird and the warbler has been going on for innumerable generations. [Please select]
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If this were true, it would make the cowbird only half parasitical--an unheard-of phenomenon. [Please select]
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Why does the cowbird lay its egg in another bird's nest. [Please select]
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Phoebe-bird (_Sayornis phoebe_), nesting-habits of, 5, 157, 158; nest-building of, 112; cowbird's egg in nest of, 157; an instance of stupidity, 168, 169. [Please select]
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The cowbird's tactics are probably to watch the movements of the parent bird. [Please select]
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Every cowbird is reared at the expense of two or more song-birds. [Please select]
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The young of the cowbird is disproportionately large and aggressive, one might say hoggish. [Please select]
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Again, standing within ten feet of him, I noticed the young bird's points, and again I was convinced that he was not a cowbird baby. [Please select]
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That was trying beyond expression--to think that all the efforts of the pretty couple, all their intense solicitude, was wasted on a great, hulking impostor like the cowbird. [Please select]
Do you have a better example in your mind? Please submit your sentence!