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European Goldfinch in Socrates Sculpture Park

10,000 Birds

In order for introduced birds to become countable in the high-stakes world of official bird-counting, they must establish a self-sustaining breeding population (think everybody’s favorites, the European Starling and the House Sparrow ). Over time, Pearson’s prediction proved accurate.

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Some Chinese Pheasants

10,000 Birds

thesis on the “Social Behavior and Cooperative Breeding of Kalij Pheasants” in a place with much nicer sanitary facilities than where I saw the bird (in rural Fujian). Wisconsin. A bit surprisingly (at least to me), the Kalij Pheasant has been introduced and established as a gamebird in Hawaii. Examples: California.

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The Passenger Pigeon & A Message From Martha: One Pigeon, Two Book Reviews

10,000 Birds

He reasons out answers to both questions, finally stating that, despite what many eyewitnesses wrote, the birds had to have laid more than one egg and that the birds had to have nested more than once a breeding season. Avery’s trip through Kentucky, Ohio, Illinois, Wisconsin, Michigan, Pennsylvania and New York holds more promise.

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