observing the survival of chicks in different conditions, anton kuzminsky made a conclusion. artificial nesting is effective only in forestry. that is, where dead trees are removed, and predators are practically absent. and the population of hollow-bearers can literally increase from scratch at times. so this is an effective measure against entoma pests that infect wood. an artificial nest for arranged in a strict order of the square nest method, that is, when they are maximally e, they have a possible uniform distance from each other and they are not the same. er, they have different inlets or currents and different heights, so you know which ones are in which places? uh, what kind of better prefer uh, and find the optimal settings for certain types. in order to help nature with her, as with a capricious patient, it is necessary to establish a deep mutual understanding, constantly keeping a finger on her pulse. such a pulse for ornithologists is the number of birds, so counting for them is a routine procedure to see birds in the dense crowns of a reserved forest, it is not a