Guy Edwardes / 2020VISION / Pussy willow catkins (Salix caprea), Somerset Levels, Somerset, England, UK, April

Guy Edwardes / 2020VISION / Pussy willow catkin (Salix caprea) bursting out from bud, Somerset Levels, Somerset, England, UK, April

Ross Hoddinott / Pussy willow / Sallow (Salix caprea) catkins, Cornwall, UK. April .

Simon Colmer / Goat willow (Salix caprea) twig and opening buds in winter, UK

Ross Hoddinott / Sallow / Pussy willow {Salix caprea} catkin, Cornwall. UK

Simon Colmer / Goat willow (Salix caprea) opening buds in spring, UK

Will Watson / Natural oxidation in a pond with sloughed periphyton, pollen and Pussy willow (Salix caprea) catkins, Herefordshire, England, UK, March

Will Watson / Natural oxidation in a pond with sloughed periphyton, pollen and Pussy willow (Salix caprea) catkins, Herefordshire, England, UK, March

Ernie Janes / Greenfinch (Carduelis chloris) perched amongst Pussy willow catkins (Salix caprea) UK, March.

Ernie Janes / Greenfinch (Carduelis chloris) perched amongst Pussy willow catkins (Salix caprea) UK, March.

Ernie Janes / Goldfinch (Carduelis carduelis) perched amongst willow catkins (Salix caprea) UK, March.

Ernie Janes / Goat / Pussy willow (Salix caprea) catkins growing in hedgerow, UK, March.

Ernie Janes / Chaffinch (Fringilla coelebs) male perched in Willow tree with catkins (Salix caprea) UK, March.

Mark Payne-Gill / Purple Emperor Butterfly (Apatura iris) larva showing defensive camouflage effect on Sallow leaf (Salix caprea). Studio, Tetbury.

Mark Payne-Gill / Hibernating Purple Emporer Butterfly (Apatura iris) larva with snow melting on Sallow branch (Salix caprea). Studio, Tetbury.

Mark Payne-Gill / Hibernating Purple Emporer Butterfly (Apatura iris) larva with snow melting on Sallow branch (Salix caprea). Studio, Tetbury.

Mark Payne-Gill / Purple Emperor Butterfly (Apatura iris) resting on Sallow leaf (Salix caprea). Alice Holt Forest, Surrey, July.

Laurie Campbell / Goat / Pussy willow / Sallow (Salix caprea) flowers in spring, Midlothian, Scotland, April

Simon Colmer / Pussy willow (Salix caprea) with female catkins in spring, Eridge Rocks SSSI, Sussex, UK

David Woodfall / Peacock Butterfly (Inachis io) resting on Goat Willow (Salix caprea) catkins. Wales, UK, March.

David Woodfall / Small Tortoiseshell Butterfly (Aglais urticae) resting on Goat Willow (Salix caprea). Wales, UK, March.

Simon Colmer / Goat willow (Salix caprea) buds in winter against white background, UK

Will Watson / Oak (Quercus robur) and Goat Willow (Salix caprea) leaves reflected in pool to create a natural abstract. Herefordshire, England, November.

Will Watson / Oak (Quercus robur) and Goat Willow (Salix caprea) leaves reflected in pool to create a natural abstract. Herefordshire, England, November.

Ross Hoddinott / Pussy willow / Great sallow (Salix caprea) catkins, backlit, against a black background. Broxwater, Cornwall, UK, April

Philippe Clement / Goat / Pussy willow / Great sallow branch (Salix caprea) with female catkins, Belgium

Philippe Clement / Goat / Pussy willow / Great sallow branch (Salix caprea) with male catkins, Belgium

Peter Lewis / Pussy willow catkins (Salix caprea) New Forest, Hampshire, England

Peter Lewis / Pussy willow catkins (Salix caprea) New Forest, Hampshire, England

Laurie Campbell / Seven-spot Ladybird (Coccinella septempunctata) on Goat willow flower {Salix caprea} Berwickshire, Scotland, UK, April

Dan Thory / Male catkins of Pussy willow {Salix caprea} England UK

Thomas Marent / Goat Willow (Salix caprea) male flowers, Switzerland

MYN / Niall Benvie / Male Goat / Pussy willow catkins {Salix caprea}, March, Angus, Scotland, UK meetyourneighbours.net project

Niall Benvie / Male Goat / Pussy willow catkin {Salix caprea}, March, Angus, Scotland, UK

MYN / Niall Benvie / Male Goat / Pussy willow catkin, March, Angus, Scotland, UK meetyourneighbours.net project

Ross Hoddinott / Sallow / Pussy Willow {Salix caprea} catkins, North Cornwall. UK

Ross Hoddinott / Sallow {Salix caprea} catkins, Cornwall. UK

Niall Benvie / Male Goat / Pussy willow catkins {Salix caprea} Angus, March, Scotland, UK meetyourneighbours.net project

Simon Colmer / Goat Willow / Sallow / Pussy Willow (Salix caprea) male catkins, UK.

David Kjaer / Robin {Erithacus rubecula} perched on sallow / pussy willow {Salix caprea} springtime, Yorkshire, UK

GEORGETTE DOUWMA / Goat / Pussy willow (Salix caprea) UK

Ross Hoddinott / Sallow / Pussy willow (Salix caprea) catkins Cornwall, UK

Philippe Clement / Sallow / pussy willow catkins {Salix caprea} Belgium

Philippe Clement / Sallow / pussy willow catkins {Salix caprea} Belgium

Ross Hoddinott / Sallow catkins / Pussy willow {Salix caprea} Cornwall, UK

Ross Hoddinott / Goat willow male catkins {Salix caprea} Cornwall, UK