Definition of cowbird in English:

cowbird

nounˈkaʊbəːdˈkaʊbərd

A New World songbird with dark plumage and a relatively short bill, typically laying its eggs in other birds' nests.
Genus Molothrus (and Scaphidura), family Icteridae: several species, in particular the widespread brown-headed (or common) cowbird (M. ater)
Example sentencesExamples
- We observed live female cowbirds at sparrow nests on 12 occasions; 11 of these were laying bouts.
- Cowbird visits usually occurred after the host left the nest, suggesting that cowbirds monitored nests closely.
- Open land provides habitat for cowbirds and nest predators.
- Incubation time is short, 10 to 12 days, which allows the young cowbird to get a head start in the nest.
- Instead of our winter visitors that left us for more northern areas, we now have grackles, red-wings and cowbirds.
- Studies have revealed that as many as 90 percent of the vireo nests in Texas and Oklahoma have been invaded by cowbirds.
- Since 1972, decoy traps baited with seeds and live cowbirds have been set out across the warbler's breeding grounds.
- In British Columbia, nearly 25% of Veery nests found had been parasitized by cowbirds.
- The only characteristic that separated parasitic cowbirds from their nonparasitic relatives was an increase in eggshell thickness.
- While female cowbirds don't sing, male cowbirds belt out a small repertory of songs, each one less than a second long.
- Warbling Vireo nests that are parasitized by cowbirds typically produce no vireo young.
- The probability of parasitism may vary among hosts because differences in their behaviors assist cowbirds in locating nests.
- Cuckoos and cowbirds lay eggs in nests of different species to avoid the costs of brood care.
- Blackbirds, cowbirds, and mockingbirds are common companions throughout most of the year.
- This fracturing allows birds of the forest edge, such as cowbirds and blue jays, to parasitize and prey upon the thrushes.
- Chaffinches and cowbirds are not the only birds that teach song to their young.
- Estimating the cost of accepting a cowbird egg was done by experimentally placing newly hatched cowbird chicks into catbird nests.
- Rothstein said that since most songbirds only sing, he suspects the cowbirds learned to sing before they started to dance.
- In Missouri, sparrows and cowbirds arrived at nests at 13.5 and 14.7 min before sunrise, respectively.
- Our findings suggest that cowbirds are relatively long lived and that recruitment into the breeding population is low.

Definition of cowbird in US English:

cowbird

nounˈkaʊbərdˈkoubərd

A New World songbird with dark plumage and a relatively short bill, typically laying its eggs in other birds' nests.
Genus Molothrus (and Scaphidura), family Icteridae: several species, in particular the widespreadbrown-headed (or common) cowbird (M. ater)
Example sentencesExamples
- Open land provides habitat for cowbirds and nest predators.
- We observed live female cowbirds at sparrow nests on 12 occasions; 11 of these were laying bouts.
- The probability of parasitism may vary among hosts because differences in their behaviors assist cowbirds in locating nests.
- Instead of our winter visitors that left us for more northern areas, we now have grackles, red-wings and cowbirds.
- Cuckoos and cowbirds lay eggs in nests of different species to avoid the costs of brood care.
- In British Columbia, nearly 25% of Veery nests found had been parasitized by cowbirds.
- While female cowbirds don't sing, male cowbirds belt out a small repertory of songs, each one less than a second long.
- Blackbirds, cowbirds, and mockingbirds are common companions throughout most of the year.
- Rothstein said that since most songbirds only sing, he suspects the cowbirds learned to sing before they started to dance.
- This fracturing allows birds of the forest edge, such as cowbirds and blue jays, to parasitize and prey upon the thrushes.
- The only characteristic that separated parasitic cowbirds from their nonparasitic relatives was an increase in eggshell thickness.
- Estimating the cost of accepting a cowbird egg was done by experimentally placing newly hatched cowbird chicks into catbird nests.
- Warbling Vireo nests that are parasitized by cowbirds typically produce no vireo young.
- Cowbird visits usually occurred after the host left the nest, suggesting that cowbirds monitored nests closely.
- Our findings suggest that cowbirds are relatively long lived and that recruitment into the breeding population is low.
- In Missouri, sparrows and cowbirds arrived at nests at 13.5 and 14.7 min before sunrise, respectively.
- Incubation time is short, 10 to 12 days, which allows the young cowbird to get a head start in the nest.
- Since 1972, decoy traps baited with seeds and live cowbirds have been set out across the warbler's breeding grounds.
- Chaffinches and cowbirds are not the only birds that teach song to their young.
- Studies have revealed that as many as 90 percent of the vireo nests in Texas and Oklahoma have been invaded by cowbirds.

单词	cowbird
释义	Definition of cowbird in English: cowbird nounˈkaʊbəːdˈkaʊbərd A New World songbird with dark plumage and a relatively short bill, typically laying its eggs in other birds' nests. Genus Molothrus (and Scaphidura), family Icteridae: several species, in particular the widespread brown-headed (or common) cowbird (M. ater) Example sentencesExamples We observed live female cowbirds at sparrow nests on 12 occasions; 11 of these were laying bouts. Cowbird visits usually occurred after the host left the nest, suggesting that cowbirds monitored nests closely. Open land provides habitat for cowbirds and nest predators. Incubation time is short, 10 to 12 days, which allows the young cowbird to get a head start in the nest. Instead of our winter visitors that left us for more northern areas, we now have grackles, red-wings and cowbirds. Studies have revealed that as many as 90 percent of the vireo nests in Texas and Oklahoma have been invaded by cowbirds. Since 1972, decoy traps baited with seeds and live cowbirds have been set out across the warbler's breeding grounds. In British Columbia, nearly 25% of Veery nests found had been parasitized by cowbirds. The only characteristic that separated parasitic cowbirds from their nonparasitic relatives was an increase in eggshell thickness. While female cowbirds don't sing, male cowbirds belt out a small repertory of songs, each one less than a second long. Warbling Vireo nests that are parasitized by cowbirds typically produce no vireo young. The probability of parasitism may vary among hosts because differences in their behaviors assist cowbirds in locating nests. Cuckoos and cowbirds lay eggs in nests of different species to avoid the costs of brood care. Blackbirds, cowbirds, and mockingbirds are common companions throughout most of the year. This fracturing allows birds of the forest edge, such as cowbirds and blue jays, to parasitize and prey upon the thrushes. Chaffinches and cowbirds are not the only birds that teach song to their young. Estimating the cost of accepting a cowbird egg was done by experimentally placing newly hatched cowbird chicks into catbird nests. Rothstein said that since most songbirds only sing, he suspects the cowbirds learned to sing before they started to dance. In Missouri, sparrows and cowbirds arrived at nests at 13.5 and 14.7 min before sunrise, respectively. Our findings suggest that cowbirds are relatively long lived and that recruitment into the breeding population is low. Definition of cowbird in US English: cowbird nounˈkaʊbərdˈkoubərd A New World songbird with dark plumage and a relatively short bill, typically laying its eggs in other birds' nests. Genus Molothrus (and Scaphidura), family Icteridae: several species, in particular the widespreadbrown-headed (or common) cowbird (M. ater) Example sentencesExamples Open land provides habitat for cowbirds and nest predators. We observed live female cowbirds at sparrow nests on 12 occasions; 11 of these were laying bouts. The probability of parasitism may vary among hosts because differences in their behaviors assist cowbirds in locating nests. Instead of our winter visitors that left us for more northern areas, we now have grackles, red-wings and cowbirds. Cuckoos and cowbirds lay eggs in nests of different species to avoid the costs of brood care. In British Columbia, nearly 25% of Veery nests found had been parasitized by cowbirds. While female cowbirds don't sing, male cowbirds belt out a small repertory of songs, each one less than a second long. Blackbirds, cowbirds, and mockingbirds are common companions throughout most of the year. Rothstein said that since most songbirds only sing, he suspects the cowbirds learned to sing before they started to dance. This fracturing allows birds of the forest edge, such as cowbirds and blue jays, to parasitize and prey upon the thrushes. The only characteristic that separated parasitic cowbirds from their nonparasitic relatives was an increase in eggshell thickness. Estimating the cost of accepting a cowbird egg was done by experimentally placing newly hatched cowbird chicks into catbird nests. Warbling Vireo nests that are parasitized by cowbirds typically produce no vireo young. Cowbird visits usually occurred after the host left the nest, suggesting that cowbirds monitored nests closely. Our findings suggest that cowbirds are relatively long lived and that recruitment into the breeding population is low. In Missouri, sparrows and cowbirds arrived at nests at 13.5 and 14.7 min before sunrise, respectively. Incubation time is short, 10 to 12 days, which allows the young cowbird to get a head start in the nest. Since 1972, decoy traps baited with seeds and live cowbirds have been set out across the warbler's breeding grounds. Chaffinches and cowbirds are not the only birds that teach song to their young. Studies have revealed that as many as 90 percent of the vireo nests in Texas and Oklahoma have been invaded by cowbirds.
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