Great black-backed gull stomach contents of great black-backed gulls was made up of birds, while a further 17% of stomach contents was made up of tern eggs alone. Adult or fledged juveniles of various bird species have also been predaceously attacked. Some fully-fledged or adult birds observed to be hunted in flight or on the ground by great black-backed gulls have included "Anas" ducks, ruddy ducks ("Oxyura jamaicensis"), buffleheads ("Bucephala albeola"), Manx shearwaters ("Puffinus puffinus"), pied-billed grebes ("Podilymbus podiceps"), common moorhens ("Gallinula chloropus"), terns, Atlantic puffins ("Fratercula arctica"), coots ("Fulica" ssp.), glossy ibises ("Plegadis falcinellus"), rock pigeons ("Columba livia") and even predatory birds
Gwennap Head appropriate time of the year, can see rare animals such as chough ("Pyrrhocorax pyrrhocorax"), great shearwater ("Puffinus gravis"), basking shark and ocean sunfish ("Mola mola"). Tol Pedn was once known as Land’s End, and in the early 19th century was usually called St Leven’s Land’s End in order to distinguish it from the present day Land’s End, which was then called Sennen Land’s End and Cape Cornwall which has also been known as Land's End. It would seem that, in the past Tol-pedn was considered to be a larger area, than what is today considered to be the headland of