The male pied flycatcher is black from the above and white underneath with one or two small white spots on the forehead. When the wings are closed, a wide white stripe can be seen over the wing. They can be encountered in sparse forests, parks, and gardens. The male bird often fights blue tits and other birds for tree hollows in the spring. Male birds arrive sooner than female birds and occupy their nesting territory. Often, pied flycatchers nest in the same nest several years in a row. The male bird greets the female bird at the chosen nest location with excited singing and by showing her the hollow. If the female bird is interested in the tree hollow, they will stay there. The tree hollow is lined with dried leaves, some hairs, and feathers. Their eggs are light blue. Their chicks do not leave the nest before they are two weeks old. If the chicks are in danger, the parents stay away and make nervous sounds; sometimes, however, they stay quiet and hide somewhere.