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What to eat - Tree-climbing dinosaurs

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  • Renner, Michael
    Faeces brings colour to birds faces Endangered vulture eats excrement to attract mates. Eating cow, goat and sheep excrement gives the Egyptian vulture the
    Message 1 of 1 , Apr 30 3:32 AM
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      Faeces brings colour to birds' faces
      Endangered vulture eats excrement to attract mates.

      Eating cow, goat and sheep excrement gives the Egyptian vulture the edge in
      the mating game.

      Ungulate droppings contain pigments called carotenoids, which birds cannot
      produce for themselves. Carotenoids are nutritious, but more importantly,
      they keep the area around the vultures' eyes bright yellow. A yellow face
      makes the fluffy white birds more attractive to mates, J. J. Negro of the
      Estacion Biologica de Donana in Seville, Spain, and his colleagues have
      found. "The yellower the better," says Negro.

      http://www.nature.com/nsu/020422/020422-14.html
      ==============================

      Tree-climbing with dinosaurs
      Fossil find hints at life of one of our earliest mammalian forebears.

      A mouse-sized fossil from 125 million years ago is the earliest known member
      of the mammal group that includes humans, say researchers. The animal is a
      primitive example of today's dominant mammals. "It's at the very root of
      this diverse and incredibly important group," says palaeontologist Zhe-Xi
      Luo of the Carnegie Museum of Natural History in Pittsburgh. The mammal,
      Eomaia scansoria, might have scampered up a tree as a feathered dinosaur ran
      past. The animal's elongated digits suggest that it was adept at climbing;
      its name translates as 'dawn-mother climber'.

      http://www.nature.com/nsu/020422/020422-15.html
      ==============================

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