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  • This is a Pteromys volans orii flying squirrel urinating, having braced itself at the entrance of its nest for the purpose. A stream of urine is visible flowing down the darkened trench beneath the pile of defecation. In most cases, these squirrels relieve themselves someplace removed from their nests. This behavior is unusual.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Pteromys volans orii flying squirrel urinating, having braced itself at the entrance of its nest for the purpose. A stream of urine is visible flowing down the darkened trench beneath the pile of defecation. In most cases, these squirrels relieve themselves someplace removed from their nests. This behavior is unusual.
    pteromys-volans-orii-flying-squirrel...tif
  • Urine drops in the snow like this are a sign that Pteromys volans orii flying squirrels frequent the area.
    pteromys-volans-orii-urine-panorama-...tif
  • Urine drops in the snow like this are a sign that Pteromys volans orii flying squirrels frequent the area.
    pteromys-volans-orii-urine-japan-202...tif
  • While I was photographing a pair of Pteromys volans orii flying squirrels perched on a branch about 10m directly overhead, the male took aim and peed on me. Fortunately I have quick reactions.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Pteromys volans orii flying squirrel defecating, having assumed a comfortable seated position at the entrance of its nest for the purpose. It is clear from the dark trail below the droppings that the residents of this nest also urinate here. This is unusual. In most cases, these squirrels relieve themselves outside, some distance from their nests.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Pteromys volans orii flying squirrel defecating, having assumed a comfortable seated position at the entrance of its nest for the purpose. It is clear from the dark trail below the droppings that the residents of this nest also urinate here. This is unusual. In most cases, these squirrels relieve themselves outside, some distance from their nests.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Japanese dwarf flying squirrel (Pteromys volans orii), gliding from the top of one tree to another. Known locally as ezo-momonga, this sub-species of Siberian flying squirrel is found only in Hokkaido, Japan. Mature females measure up to 15cm, males up to 18cm (not including tail). These animals weigh up to 120g and are capable of gliding considerable distances. During flight, they use their patagia (membranes of skin between their forelimbs and hind limbs) and tails (10-12cm) to achieve lift, directional control and maneuvering capability. One study in Japan recorded a maximum glide distance exceeding 49m, though most flights fell into the 10m to 20m range. Although these animals are primarily nocturnal, they sometimes emerge during the day. Usually this is for brief durations to urinate or defecate. In this instance, this particular individual was one of two males competing for the right to mate with a female. Such reproduction-related competition sometimes takes place during daylight hours.
    japanese-dwarf-flying-squirrel-airbo...tif
  • Pictured here is a pair of Japanese dwarf flying squirrels (Pteromys volans orii) shortly before mating. The female is in front. She has lifted her tail, letting the male check her status by smell. They mated one hour after this photo was taken. This perch is stained with urine, and there are feces visible. This is an indication that it is frequented by these and possibly other flying squirrels.
    japanese-flying-squirrel-pteromys-vo...tif
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Tony Wu Underwater Photography

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