Therefore, the present record must represent an exceptionally early southbound migrant, or, more probably, a nonbreeding, summering individual. [Please select]
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Check-list (1957:166), nonbreeding birds are found in summer in coastal areas south to California, Panamá, and Florida. [Please select]
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The dates of our records suggest that nonbreeding birds summer along the coast of Tamaulipas. [Please select]
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None of the nonbreeding northern shorebirds observed by Eisenmann (1951:183) in Panamá in summer were in nuptial plumage. [Please select]
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Check-list (1957:208), nonbreeding birds occur in summer extensively through winter range of the species, including the Gulf coast of the United States. [Please select]
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Our specimens probably were nonbreeding birds summering between the breeding range in arctic America and the winter range in northern South America. [Please select]
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Eleven species occur on the island as nonbreeding summer residents, about which we will have more to say below. [Please select]
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However, the packs studied there could not be identified with certainty, and little information was obtained about nonbreeding population units. [Please select]
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To test the proposed hypothesis with certainty, a larger number of identifiable breeding and nonbreeding population units from the same general area must be followed during at least one winter. [Please select]
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