Some pairs of pigeons have expressed the ability to lay eggs only in nests where there is bedding material from straw. Other pairs of pigeons can lay eggs in the dark corner of the dovecote. Individual pigeons break eggs if nests are not equipped.
In all cases, it is necessary to equip the nest, lay the litter, lay a gypsum egg, after laying two eggs and the calm state of the pigeons, lay eggs to incubate, removing the artificial one. Simultaneous incubation of two eggs contributes to the friendly hatching of young animals and subsequent normal development. To prevent the egg from being hit, it is advisable to disturb the pigeons as little as possible during the incubation period.
Pigeons and the prevention of their diseases. A.I. Rakhmakhov, B.F. Bessarabov (Moscow, Rosselkhozizdat, 1987)