European Hornbeam (Carpinus betulus), female flowers and male catkins, Lower Saxony, Germany, Europe

"Common Hazel (Corylus avellana), male flowers or catkins, North Rhine-Westphalia, Germany, Europe"

Male catkins of a Common Hazel (Corylus avellana) with hoarfrost, Saxony, Germany, Europe

"Catkins, purple willow, purple osier (Salix purpurea), wetlands of the Isar River, Upper Bavaria, Bavaria, Germany, Europe"

European Hornbeam (Carpinus betulus), female flowers, left, and male catkins, right, Lower Saxony, Germany, Europe

"Walnut or Common Walnut, Walnut tree (Juglans regia), branch with male flowers, catkins, Southern France, Provence, France, Europe"

"Western honey bee (Apis mellifera) perched on the female catkins of a goat willow (Salix caprea), Thuringia, Germany, Europe"

Woman with willow catkins and fir branches ca. 1930, exact place unknown, Germany, Europe

Goat willow or pussy willow (Salix caprea)

"Tonkinese cat breed, tomcat for breeding with kittens"

Cat sitting on donkey's head, England, Great Britain

"Tonkinese cat breed, kitten"

Catkins