The biggest bird in the High Tatras is the golden eagle with the wing spread 190-240 cm and the body length 75-90 cm. The male weighs 3-4,5kg, but female 3,5-6,5 kg. In the Slovakia 100 pairs of golden eagles is monitored, but the whole population is suggested about 200-250 individuals. The term of live of the golden eagle is 15-30 years in nature. It reaches the 150km/h speed by his hunts.