
Adults Herring gulls are told from most gulls by their large size, pale grey upperparts and pink legs. It is a large gull, measuring up to 66 cm (26 in) long and weighing between 1,050 and 1,525 g. These birds are highly adaptable feeders that opportunistically take a wide range of prey. They are also intelligent and beautiful. They display this intelligence when it comes to feeding, they can adapt to human created changes and learn to live from a different type of food than their ancestors. Gulls have also been observed to drop hard-shelled molluscs onto rocks so that they break open so they can eat them. They’ll also stamp their feet in a group to imitate rainfall and trick earthworms to come to the surface. Another example of intelligence is behavior of hovering over bridges in order to absorb raising heat from paved roadways. The herring gull have exhibited tool-use behaviour, for example using pieces of bread as bait with which to catch goldfish.

The alpine accentor (Prunella collaris) is at home even when temperatures drop below freezing and with strong winds. Its habitats are above the treeline and thanks to its sturdy build, it can hold out in high mountains even in the coldest time of the year. The Alpine Accentor finds sufficient food on snow-free ledges and wind-exposed slopes.

The genus name of the Alpine chough (Pyrrhocorax graculus) is derived from Greek πύρρος (purrhos), "flame-coloured", and κόραξ (korax), "raven". It breed in high mountains from Spain eastwards through southern Europe and North Africa to Central Asia and Nepal, and it may nest at a higher altitude than any other bird. The Alpine
chough pairs for life and displays fidelity to its breeding site, which is usually a cave or crevice in a cliff face.
chough pairs for life and displays fidelity to its breeding site, which is usually a cave or crevice in a cliff face.