The chick of little grebe hatched on its own while mom was out. First, a small crack appeared in the shell, the crack gradually widened, and then the shell cracked. Finally, the chick opened the shell on its own and came out of the shell. After hatching, the chick crawl under its mom’s wings on its own. August 29, 2021.
Hatching scene
This is about 2 minutes and 30 seconds after the shell cracks.
It took about 12 minutes and 30 seconds for the chick to fully emerge from the shell.
Summary
What the author can say from this observation is that the little grebe chicks may not be pecking at the eggshell. As their curled-up bodies stretch, stress is applied to the eggshells, causing the shells to crack.
The little grebes are so-called carnivores, and the chicks get the right food to eat from their parents. The chicks may not have the strength to peck at hard objects.
Timestamp of video
0:38 Small cracks in the surface of the shell.
1:28 The shell cracked.
1:44 The shell opened.
2:45 The head of the chick came out of the shell.
4:53 The body of the chicks came out of the shell.
6:00 The hatched chick entered under mom’s wings.
About of the hatching of little grebe (Nov 23, 2021).
When the little grebe lays an egg, it immediately begins to warm the egg. It lays one egg a day for several days. And, the eggs hatch one by one a day.
The spot-billed ducks and swallows begin to warm eggs all at once after they accumulate. I have not seen the hatching scene of spot-billed ducks, but all the chicks of spot-billed ducks are hatching on the same day.
