Golden eagles are a part of the Aquila genus, there are some sixteen species of aquila such as Bonelli’s Eagle Verreaux’s Eagle Booted Eagle and the Tawny Eagle. You maybe able to tell if the Golden eagle is not or juvenile, being the juvenile has white patches at the bottom of the secondaries and inner primaries and also two thirds of the tail are also white viewable once the bird is in flight.
There are six recognized sub species within its worldwide range that are Aquila chrysaetos chrysaetos, A. c. homeyeri, A. c.daphanea ( the biggest of the sub species), A. c. kamtschatica, A. c. canadensis and A. c. japonica (the smallest of the sub species). I’ve talked to a Eagle Falconers which say there’s a further eight subspecies although these perhaps of subspecies of subspecies of the Golden eagle.
The Golden Eagle occupies almost all of the mountainous areas in the north hemisphere, if forests are close by they will have to be lean differently if to dense it will handicap the eagles searching ability.
They’ll prey upon animals like rabbit hare partridge pheasant and in the warmer weather reptiles, and will feed on carcasses like deer and sheep.
Golden eagles in time will build a choice of nests then continue using these nests making the nest larger and larger each time it’s used, some have been listed at being 5m tall and 1.5 m in diameter. They’ll build the nest so that in the warmest portion of the day that the nest isn’t in direct sun light as to not over heat the nest and the majority of the time they’ll use a cliff to construct a nest as opposed to a tree and sometimes a manmade structure.