David Pattyn / Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from a fisherman coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July

David Pattyn / Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from fishermen coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July

David Pattyn / Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from fishermen coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July

Mike Wilkes / Carrion crows (Corvus corone) harassing Buzzard (Buteo buteo) trying to steal its prey, Warwickshire, England, UK, March

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Laurent Geslin / Juvenile urban Red fox trying to steal food from mother {Vulpes vulpes} London, UK

Roger Powell / Grey squirrel (Sciurus aureogaster) trying to steal peanuts from a garden bird feeder. Bessacarr, Doncaster, Yorkshire, England, UK, December.

Roger Powell / Grey squirrel (Sciurus aureogaster) trying to steal peanuts from a garden bird feeder. Bessacarr, Doncaster, Yorkshire, England, UK, December.

Tony Wu / Spotnape cardinalfish (Ostorhinchus notatus) pair spawning. Male has taken fertilised eggs into mouth to brood, female chasing male in an apparent attempt to steal eggs. Shizuoka Prefecture, Honshu, J...

David Pattyn / Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from a fisherman coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July

Nick Upton / White stork (Ciconia ciconia) trying to steal nest material from another's nest. In captive breeding colony raising chicks for UK White Stork reintroduction project at the Knepp Estate. Cotswold W...

Jack Dykinga / Herring gulls (Larus argentatus) squabbling over clams. The birds drop the clams from height to open them, but this can allow another bird to steal it. Coronado Island, San Diego, California. USA, May...