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Peter Burke: Cackling x Snow Goose
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Peter Burke: Gooses
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Peter Burke: Cackling x Ross's Goose?
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Peter Burke: Ross's x Snow Goose
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Peter Burke: Ross's x Cackling Goose
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Peter Burke: Black X Eastern Phoebe
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Peter Burke: Black X Eastern Phoebe
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Peter Burke: Black X Eastern Phoebe
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Peter Burke: Black X Eastern Phoebe
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Peter Burke: Snow x Canada Goose ??
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Peter Burke: Canada x Greater White-fronted Goose
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Peter Burke: Canada x Snow Goose
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Peter Burke: Cackling x Snow Goose
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Peter Burke: Ross's x Cackling Goose
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Peter Burke: Ross's x Lesser Snow Goose
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Peter Burke: Canada x Snow Goose
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Peter Burke: Canada x Snow Goose
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Peter Burke: Cackling x Snow Goose
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Peter Burke: Cackling x Ross's Goose
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Peter Burke: Cackling x Greater White-fronted Goose
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Peter Burke: Lawrence's BW x GW Warbler
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Peter Burke: Lawrence's BW x GW Warbler
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Peter Burke: Myrtle x Audubon's Yellow-rumped Warbler