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doi:10.2307/4072953
Published in The Auk, in 1920, in volume 37, pages 24-32
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doi:10.2307/4072954
Published in The Auk, in 1920, in volume 37, pages 33-45
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Published in The Auk, in 1920, in volume 37, pages 46-49
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Published in The Auk, in 1920, in volume 37, pages 49-55
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Published in The Auk, in 1920, in volume 37, pages 55-59
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Published in The Auk, in 1920, in volume 37, pages 60-77
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Published in The Auk, in 1920, in volume 37, pages 78-84
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Published in The Auk, in 1920, in volume 37, pages 84-88
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Published in The Auk, in 1920, in volume 37, pages 88-91
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Published in The Auk, in 1920, in volume 37, pages 92-94
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Published in The Auk, in 1920, in volume 37, pages 94-102
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Published in The Auk, in 1920, in volume 37, pages 105-108
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Published in The Auk, in 1920, in volume 37, pages 108-109
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Published in The Auk, in 1920, in volume 37, pages 110-125
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Published in The Auk, in 1920, in volume 37, pages 126
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doi:10.2307/4072969
Published in The Auk, in 1920, in volume 37, pages 127
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Published in The Auk, in 1920, in volume 37, pages 128-130
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Published in The Auk, in 1920, in volume 37, pages 130-131
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Published in The Auk, in 1920, in volume 37, pages 133
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Published in The Auk, in 1920, in volume 37, pages 134
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Published in The Auk, in 1920, in volume 37, pages 135
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Published in The Auk, in 1920, in volume 37, pages 136-137
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Published in The Auk, in 1920, in volume 37, pages 137-138
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Published in The Auk, in 1920, in volume 37, pages 143-144
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Published in The Auk, in 1920, in volume 37, pages 147-149
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