Tigrisoma lineatumThree chicks in three different sizes. This is because Tiger-Herons, unlike most bird species, begin to incubate immediately after the egg is laid. Since the eggs take the same number of days to develop they hatch staggeredly. This is known as asynchronous hatching and accounts for the difference in size. The oldest chick is almost a month old.
© Claudia y Tito Di Mauro