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Pteromys volans orii Flying Squirrel Estrus

The pair of Pteromys volans orii flying squirrels in the center of the photo comprise a male (left, facing camera) and female (right). The female is in estrus. At this point, the pair had copulated several times, but also attracted the attention of rival males, like the one above, which was poised to pounce in an attempt to dislodge the primary male.

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Copyright: Copyright Tony Wu. All rights reserved. No duplication, reproduction or usage without prior written permission.
Image Size: 8256x5504 / 130.3MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Mammal Squirrel Animalia Chordata Mammalia Rodentia Sciuridae Pteromys volans orii Eurasian Small Flying Squirrel Ezo Momonga Japanese Dwarf Flying Squirrel Russian Flying Squirrel Siberian Flying Squirrel Nocturnal Estrus Reproduction Pacific Japan Hokkaido
Contained in galleries: Flying Squirrels, Japan

The pair of Pteromys volans orii flying squirrels in the center of the photo comprise a male (left, facing camera) and female (right). The female is in estrus. At this point, the pair had copulated several times, but also attracted the attention of rival males, like the one above, which was poised to pounce in an attempt to dislodge the primary male.