What is a species? British bird expert develops a math formula to solve the problem

  • Pensoft Editorial Team
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  • May 10, 2018
  • Nature is replete with examples of identifiable populations known from different continents, mountain ranges, islands or lowland regions. While, traditionally, many of these have been treated as subspecies of widely-ranging species, recent studies relying on molecular biology have shown that many former “subspecies” have in fact been isolated for millions of years, which is long […]

    New immigrant: Shiny Cowbirds noted from a recording altitude of 2,800 m in Ecuador

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  • May 5, 2016
  • Two juveniles of Shiny Cowbird, a parasitic bird that lays its eggs in the nests of other birds, were spotted in the Andean city of Quito, Ecuador, for the first time. This finding represents an altitudinal expansion of approximately 500 m. Breeding populations might have been prompted by forest fragmentation and/or climate change, suggest the […]

    The owls beyond the Andes: Divergence between distant populations suggests new species

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  • November 13, 2015
  • They might be looking quite identical, while perched above humanised farmlands and grasslands across several continents, but each of the populations of two owl species, living in the opposite hemispheres, might actually turn out to be yet another kind. This suggestion has been made by Dr. Nelson Colihueque and his team from Universidad de Los […]