Tag: england
White-crowned Sparrow Immatures And Adults – Skewed Populations?
Over the years I’ve noticed something perplexing about the apparent relative numbers of immature and adult White-crowned Sparrows.
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White-crowned Sparrow Immatures And Adults – Skewed Populations?
Over the years I’ve noticed something perplexing about the apparent relative numbers of immature and adult White-crowned Sparrows.