The hills that form the IBA are 120 km long and up to 20 km wide, and are separated into five compartments by saddleback ridges. The forests consist mainly of Fagus, with Acer and Abies on higher ground and Quercus at lower altitudes. Mesophile meadows occur on the forest edge and within the forest at higher altitudes.
The IBA is important for forest species, especially forest-nesting raptors. Shrubby grasslands in the foothills support nesting passerine species. Other species of note include Ciconia ciconia and Bubo bubo.
BirdLife International (2019) Important Bird Areas factsheet: Slanské hills. Downloaded from http://www.birdlife.org on 13/10/2019.