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Pollen grain flying from birch tree catkins in spring season

Horizontal close-up picture of cloud of pollen grain from birch tree catkin, flying in the air in spring season for the pollination process. Photography with a human hand shaking and rubbing catkin to scatter the pollen grains. Catkins on branch are shaken by the wind, which disperses the pollen from the tree all over the air.

Horizontal close-up picture of cloud of pollen grain from birch tree catkin, flying in the air in spring season for the pollination process. Photography with a human hand shaking and rubbing catkin to scatter the pollen grains. Catkins on branch are shaken by the wind, which disperses the pollen from the tree all over the air.

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