Dayton and Daniel’s eggs hatched! On Sunday afternoon one chick was visible in the nest. Later Sunday evening a second chick hatched. If all progresses normally, the chicks will be the same size as their parents within six weeks. At this link you can see images of how fast the chicks will grow:
During the first 24 hours after hatching the chicks will use energy from the remaining yolk sac that they had while still in the egg. Within a day the female will begin feeding the chick. The baby chicks eat the same food as their parents, mostly birds brought to the nest by the male. The female will tear tiny pieces using her beak and feed them to the chicks.
In this image you can see one of the parents eating a meal just outside the nest box to the right side of the image while the oldest chick sits in the nest box. Within hours of this meal a second chick hatches. The chicks are called eyases and, like most babies, they eat a lot. They will double their weight in only six days!
In order to hatch from the eggs the chicks used a sharp tip on their beak called a beak tooth to pip out of the shell. A special muscle also developed while in the egg along the back of the neck that assists the chicks in hatching called the hatching muscle. Some of the egg shells are still visible in the nest with a reddish brown outside and white on the inside of the cracked shell. This year incubation went a little longer than estimated. Even though the eggs are laid days apart they typically synchronize to hatch around the same date. In this image from around 8 p.m. Sunday two chicks peak out from the adult peregrine. The babies cannot thermoregulate well until about 10 days old so the parents continue to sit on them to keep them warm.
Updated on 4/20/16 at 10:00 a.m.
Surprise! A new chick was born! There are now three Falcon chicks as of this morning.