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cowbird    
n. 北美产的燕八哥

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  • Brown-headed Cowbird - All About Birds
    Basic Description The Brown-headed Cowbird is a stocky blackbird with a fascinating approach to raising its young Females forgo building nests and instead put all their energy into producing eggs, sometimes more than three dozen a summer
  • Cowbird - Wikipedia
    Cowbirds are birds belonging to the genus Molothrus in the family Icteridae They are of New World origin and are obligate brood parasites, laying their eggs in the nests of other species
  • What Is A Cowbird And Why Is It A Nuisance? - Southern Living
    The cowbird is native to North America, and many birders consider it a nuisance Learn about the destructive bird and how to keep it out of your yard
  • Brown-Headed Cowbird: A Nasty Native Species - Birds and Blooms
    Learn why the brown-headed cowbird is many birders' least favorite—and how to tell cowbird eggs apart from those of other species
  • Brown-headed Cowbird | Audubon Field Guide
    Centuries ago, the Brown-headed Cowbird probably followed bison herds on the Great Plains, feeding on insects flushed from the grass by the grazers Today it follows cattle, and occurs abundantly from coast to coast
  • 6 Types of Cowbirds: Identification with Pictures
    Cowbirds are fascinating members of the blackbird family, best known for their unusual breeding strategy called brood parasitism—though not all species follow this rule Spread across the Americas, these birds range from the small and glossy Shiny Cowbird to the large and powerful Giant Cowbird
  • Brown-headed cowbird - Wikipedia
    Cowbird brains are wired to respond to the vocalizations of other cowbirds, allowing young to find and join flocks of their own species These vocalizations are consistent across all cowbird populations, and serve as a sort of species-recognition password
  • Brown-headed Cowbird - All About Birds
    The Brown-headed Cowbird is a stocky blackbird with a fascinating approach to raising its young Females forgo building nests and instead put all their energy into producing eggs, sometimes more than three dozen a summer
  • Brown-headed Cowbirds - NestWatch
    Brown-headed Cowbirds are native to the United States and prefer open grasslands, as well as agricultural, urban, and suburban habitats where grain or cattle-disturbed soil are readily available Historically they followed herds of bison, eating insects kicked up by the animals’ hooves
  • This bird’s song sounds exactly like dripping water. Scientists just . . .
    Like all birds, cowbirds produce sound using the syrinx – a vocal organ with two independent sound sources, one on each side But in cowbirds, these sides are not the same





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