 Various studies have also pointed to the abundance of snakes (both arboreal and terrestrial varieties) and other reptiles (principally lizards) in its prey base, but the relative frequency of different types of prey apparently varies greatly on the individual level.The crested eagle seems to be a still-hunter, as it has been observed perched for long periods of time while visual scanning the forest around them.The crested eagle is almost always observed singly or in pairs.