Nick Upton / Black-headed gull (Chroicocephalus ridibundus) male regurgitating food for its mate on their teritory on the margins of a lake, Gloucestershire, UK, April.

Nick Upton / Little ringed plover (Charadrius dubius) foraging for invertebrate food on the muddy margins of a freshwater lake, Gloucestershire, UK, April.

Heather Angel / Mother of thousands (Kalanchoe daigremontiana), viviparous growth with vegetative propagation of plantlets on leaf margins. In cultivation.

Nick Upton / Grey wagtail (Motacilla cinerea) catching flies and calling on the margins of a lake, Somerset, England, UK, May.

SCOTLAND: The Big Picture / Field of grass partially mown for the production of sileage leaving uncut strips and field margins, providing habitat for insects and other wildlife, Cairngorms National Park, Scotland, UK, July.

Nick Upton / Dexter cattle (Bos taurus) grazing the grassy margins of Rutland Water reservoir with Burley-On-The-Hill House in the background, Rutland, UK, November.

Nick Upton / Water rail (Gallus aquatica) foraging in a shallow pond at the margins of a reed bed, Gloucestershire, England, UK, November.

Nick Upton / Water rail (Gallus aquatica) foraging close to the margins of a reed bed, Gloucestershire, England, UK, November.

Nick Upton / Shelduck (Tadorna tadorna) pair with their brood of young ducklings resting on the margins of lake, Gloucestershire, UK, June.

Nick Upton / Oystercatcher (Haematopus ostralegus) passing small Earthworm (Lumbricus terrestris) it has caught on the grassy margins of lake to its developing chick, Gloucestershire, UK, June.

Nick Upton / Oystercatcher (Haematopus ostralegus) chick watching and waiting to be fed by parent as it forages for invertebrate food on the grassy margins of lake, Gloucestershire, UK, June.

Nick Upton / Moorhen (Gallinula chloropus) walking in the margins of shallow lake, Gloucestershire, UK, October.