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  • Pictured here are male catkins of an Alnus japonica elder tree together with female cones. The male catkins comprise many flowers, which produce pollen to pollinate female catkins. Once pollinated, the female catkins develop into woody false cones as seen here. In the autumn the scales of the cones open and disperse their seeds. Male catkins of this species are among the favorite foods of Pteromys volans orii flying squirrels.
    alnus-japonica-alder-catkins-and-con...tif
  • These are male catkins of an East Asian alder tree (Alnus japonica). These catkins are highly prized food among Pteromys volans orii flying squirrels.
    alnus-japonica-alder-male-catkins-ja...tif
  • This Japanese dwarf flying squirrel (Pteromys volans orii) snacking on a Japanese alder (Alnus japonica) flower, one of this species’ preferred foods.
    japanese-dwarf-flying-squirrel-20200...tif
  • During the breeding season, male Japanese dwarf flying squirrels (Pteromys volans orii) sometimes confront one another, usually in the context of competition for a female. Here, the one above has just snuck up behind the individual below, which made a quick turn to look up at the intruder. The animal looking up was in the midst of enjoying a snack, the flowers of a Japanese alder (Alnus japonica) that are visible in his mouth. A frantic battle between the two males soon ensued.
    japanese-dwarf-flying-squirrel-males...tif
  • This is a Pteromys volans orii flying squirrel pausing after consuming catkins from a Japanese alder tree (Alnus japonica) that it had found on the ground. The catkins are favored fare for these squirrels. This squirrel ran up the tree and launched itself into the forest after this.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Pteromys volans orii flying squirrel eating one of its favorite foods—catkins from a Japanese alder tree (Alnus japonica). This individual had descended to ground level during a winter evening to forage for fallen catkins. Descending in this manner is unusual behavior.
    pteromys-volans-orii-flying-squirrel...tif
  • This is a Pteromys volans orii flying squirrel enjoying one of its favorite meals. The animals is eating male catkins of an Alnus japonicus alder tree.
    pteromys-volans-orii-eating-alnus-ja...tif
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Tony Wu Underwater Photography

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