WILLIAM OSBORN / Great Tit (Parus major) male perched, Wiltshire, England

Mike Wilkes / Blue tit (Parus major) in tree. England, UK, Europe

Dietmar Nill / Great tit (Parus major). Germany, Europe

Bengt Lundberg / Great tit pair inside nest box with 3-day-old chicks {Parus major} Sweden

Bengt Lundberg / Great tit {Parus major} inside nestbox feeding 20-day-old chicks, Sweden

WILLIAM OSBORN / Great tit on flowering sallow tree branch UK (Parus major)

DAVID TIPLING / Great spotted woodpecker {Dendrocopus major} Blue tits (Parus caeruleus) on garden feeder, UK

Bengt Lundberg / Great tit inside nestbox with hungry 20-day-old chicks {Parus major} Sweden

Dietmar Nill / Great tit (Parus major) with snow. Germany, Europe

Mike Read / Great tit (Parus major) on snowy branch, New Forest National Park, Hampshire, England, April

Mike Read / Male Great tit (Parus major) perched on branch, Ringwood, Hampshire, England, February

Mike Read / Great tit {Parus major} perched, New Forest National Park, Hampshire, UK, January

Mike Read / Male Great tit (Parus major) on branch, Ringwood, Hampshire, England, February

Mike Read / Great tit (Parus major) male on branch, Ringwood, Hampshire, England, February

Wild Wonders of Europe / Varesvuo / Great Tit (Parus major) at water, Pusztaszer, Hungary, May 2008

Peter Lewis / Male Great Tit (Parus major) on twig. Hampshire, UK.

Duncan Usher / Great Tit (Parus major) with berries, Germany

Nature Production / Great Tit {Parus major} perched amongst berries, Nagano, Japan, October

Jose B. Ruiz / Great tit returning to nest {Parus major} Alicante, Spain, Europe

Mike Read / Great tit male {Parus major} UK

Paul Hobson / Great tit feeding on fir cone {Parus major} UK

Mike Read / Great spotted woodpecker {Dendrocopus major} at seed feeder. UK