Jungle Crow
Crows distributed on Mount Koma
Corvus macrorhynchos (Jungle Crow or Large-Billed Crow), Corvus corone (Carrion Crow)
The former species is widespead more than the latter species on Mount Koma.
Corvus macrorhynchos on Mount Koma
H. Nishi took all pictures.
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| 1. A Corvus macrorhynchos fed at 500 m in elevation. (July, 2002) | 2. A Corvus macrorhynchos caws on a palign at 450 m in elevation. Near the car pool on Mount Koma, crows often use artificial poles as perch. (July, 2002) | 3. Refer to photo 2. |
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| 4. A Corvus macrorhynchos stays on a larch. The dominant tree species on Mount Koma is now Japanese larch, and many bird species feed, reproduce and rest in areas where the larch is dominant. This photo was taken at 700 m in elevation. (July 2002) | 5. A Corvus macrorhynchos walks on the ground to find out food. (Aug. 2002) | 6. Refer to photo 5. |
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| 7. Corvus macrorhynchos caws on a Populus maximowiczii tree. As mentioned above, crows often utilize trees as perch. Therefore, the seedlings of Rhus trichocarpa often establish under the perches. | 8. Corvus macrorhynchos on a larch at 500 m in elevation (August 2002) | 9. Refer to photo 8. |
References
- Nishi, H. & Tsuyuzaki, S. 2004. Seed dispersal and seedling establishment of Rhus trichocarpa promoted by a crow (Corvus macrorhynchos) on a volcano in Japan. Ecography 27: 311-322
In: Handbook of the Birds of the World LINK