Reducing the mass of eggs -headed Gull (Larus ridibundus) during incubation
The article presents data on the decrease in egg weight headed Gull during incubation. Weight of eggs decreases with varying intensity throughout the incubation period, beginning with laying eggs until hatching. The nature of the change in mass of eggs during the breeding season depends on a complex of factors, which include the serial number of eggs in the nest and the structural features of the shell.