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Auteur Christine R. Dahlin |
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Christine R. Dahlin, Auteur ; Chelsea Blake, Auteur ; Jake Rising, Auteur ; Timothy F. Wright, AuteurThe population of Yellow-naped Amazons (Amazona auropalliata) declined by an estimated 50% between 1980 and 2000, and the current population is estimated to be between 10,000 and 50,000. Poaching of young has been a persistent problem, but the s[...]Article
Timothy F. Wright, Auteur ; Christine R. Dahlin, AuteurVocal dialects have fascinated biologists for over 50 years. This mosaic pattern of geographic variation in learned vocalisations was first described in a songbird, and since that time most studies investigating dialects have focused on songbird[...]