The Nanoèica river basin is situated in the lower Pivka valley near Postojna at the edge of a large depression. Habitats are relatively intact and undisturbed by man. The river has numerous meanders with well- preserved meadows, and small areas of reed and sedge. Pugled hill, in the middle of the site, supports relict remnants of neutral-soil beech Fagus forest. Because of the wet ground, extensive farming is possible only on the driest border of the site, and human settlement is concentrated here.
An important site for breeding Crex crex. A total of 63 bird species have been recorded, among them 45 breeders and a further seven possible breeders. The site is also nationally important for birds on migration.
BirdLife International (2020) Important Bird Areas factsheet: Nanoščica river basin. Downloaded from http://www.birdlife.org on 02/06/2020.