Steve Knell / Oystercatchers {Haematopus ostralegus} flock in flight, Morecombe Bay, Lancashire, UK.

Steve Knell / Spotted flycatcher {Muscicapa striata} UK

David Tipling / Goldfinch {Carduelis carduelis} on Teasel, cold winters morning, Kent, UK.

Mike Read / Red crested pochard duck male {Netta ruffina} Arundel, Sussex, UK

Steve Knell / Whitethroat singing {Sylvia communis} UK

Steve Knell / Common tern {Sterna hirundo} in flight, UK

Steve Knell / Kittiwake (Rissa tridactyla) colony on cliffs in Northumerland, one in flight carrying nesting material. Northumberland, July

Steve Knell / Peregrine Falcon (Falco peregrinus) male on rock, looking behind him, UK

Steve Knell / Kittiwake (Rissa tridactyla) colony on cliffs in Northumerland, one in flight calling. Northumberland, July

Steve Knell / Peregrine Falcon (Falco peregrinus) male on rock, looking behind him, UK

Steve Knell / Rock ptarmigan on rocks in winter, calling. Scotland, UK

Steve Knell / Arctic tern (Sterna paradisaea) in flight, UK. Arctic terns migrate annually a marathon distance of 7,200 miles