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  1. No Access

    Article

    Plasma carotenoid depletion during fasting in moulting penguins

    The questions of whether carotenoids are mobilized from storage organs or the blood during food shortages or in stressful situations and the amount of carotenoids available in these situations remain contentio...

    A. Barbosa, M. J. Palacios, J. J. Negro, J. J. Cuervo in Journal of Ornithology (2013)

  2. Article

    Population fragmentation leads to isolation by distance but not genetic impoverishment in the philopatric Lesser Kestrel: a comparison with the widespread and sympatric Eurasian Kestrel

    Population fragmentation is a widespread phenomenon usually associated with human activity. As a result of habitat transformation, the philopatric and steppe-specialist Lesser Kestrel Falco naumanni underwent a s...

    M Alcaide, D Serrano, J J Negro, J L Tella, T Laaksonen, C Müller, A Gal… in Heredity (2009)

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    Genetically distinct island populations of the Egyptian vulture (Neophron percnopterus)

    The Egyptian vulture (Neophron percnopterus) is a species in decline throughout Europe, with the largest remaining breeding populations found in northern Spain. Iberian Peninsula populations of this species (abou...

    Maria B. Kretzmann, N. Capote, B. Gautschi, J.A. Godoy… in Conservation Genetics (2003)

  4. No Access

    Article

    An unusual source of essential carotenoids

    A yellow-faced vulture includes ungulate faeces in its diet for cosmetic purposes.

    J. J. Negro, J. M. Grande, J. L. Tella, J. Garrido, D. Hornero, J. A. Donázar… in Nature (2002)