a close up of brownish-gray furry male catkins of common aspen populus tremula on a branch against the sky

aspen background beautiful blooming blossom blue branch brown brownish brownishgray catkins close closeup cluster color colorful common delicate detail downy early environment eurasian european flora flowers fluffy forest fresh furry gray inflorescence light macro male natural nature outdoor plant populus quaking silvery sky soft spring springtime sunlight sunny tree tremula white wild