In the forests of Podkarpacie there lasts hanging new and cleaning old birdhouses. Last year 1636 new ones were hung, and over 10 thousand existing ones were maintained . This fall almost 800 have already been hung and 7.6 thousand have been preserved.
Supporting birds is important especially in areas where the balance of nature is disturbed. Artificial bird houses should be made of raw coniferous wood, without any additions such as sheet metal, plastic or fiberboard. Birds are reluctant to hatch surrounded by synthetic materials. Leaving old trees with hollows also helps protect them, hence the smaller number of nest boxes now hanging deep in the forests. Woodsmen also install nest boxes for larger birds, e.g. owls, and bats living in the forest.