Markus Varesvuo / Female Black grouse (Tetrao / Lyrurus tetrix) perched in Willow feeding, Utajarvi, Finland, May.
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Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.
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Jussi Murtosaari / Scarce tortoiseshell butterfly (Nymphalis xanthomelas) on pussy willow, Luhanka, Keski-Finland, April. / Central Finland, Finland, April.
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Guy Edwardes / 2020VISION / Pussy willow catkin (Salix caprea) bursting out from bud, Somerset Levels, Somerset, England, UK, April
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Andy Sands / Mining Bee (Andrena clarkella) on Sallow catkin, Hertfordshire, England, UK, March
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Andy Sands / Mining Bee (Andrena clarkella) on Sallow catkin, Hertfordshire, England, UK, March
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Ross Hoddinott / Sallow / Pussy willow {Salix caprea} catkin, Cornwall. UK
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Hanne & Jens Eriksen / Eurasian blue tit (Cyanistes caeruleus) perched in tree amongst catkins. Denmark, February.
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Nigel Cattlin / Goat willow (Salix caprea) male catkins. Kennett and Avon Canal, Berkshire, England, UK. April.
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Heather Angel / Common bee fly (Bombylius major) nectaring on Goat willow (Salix caprea) catkin. Surrey, England, UK. March.
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Heather Angel / Goat willow (Salix caprea) female catkin in UV light, fine hairs and nectar fluroescing. Surrey, England, UK. Focus stacked.
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Heather Angel / Hazel (Corylus avellana) catkins dispersing pollen with female flower above on branch. Controlled condition.s Surrey, England, UK.