Budgerigar chicks hatch after an incubation period of approximately 18 days. They emerge blind, featherless, and entirely dependent on their parents for warmth and nourishment. In a healthy clutch the hen will begin feeding the first chick almost immediately, regurgitating a nutrient-rich crop milk that provides essential proteins and fats. During this critical window the chick's primary need is consistent warmth, as it cannot regulate its own body temperature.
The nest box should remain undisturbed as much as possible during the first day. Excessive handling or checking can stress the hen and lead her to abandon feeding duties. A brief visual inspection to confirm the chick is alive and has been fed — indicated by a small, yellowish food deposit visible through the translucent skin of the crop — is usually sufficient. If the crop appears empty after several hours, intervention may become necessary.
Ambient temperature around the nest box should remain steady between 85 and 90 degrees Fahrenheit during the first day. Drafts are particularly dangerous for newly hatched chicks because their lack of down feathers leaves them fully exposed. Ensure the room is free from sudden temperature swings, and avoid placing the nest box near windows, vents, or exterior walls.
It is normal for chicks within the same clutch to hatch on different days, sometimes with gaps of up to 48 hours between siblings. This staggered hatching means the oldest chick will have a size advantage. Monitor the nest over the following days to ensure smaller chicks are still receiving adequate feedings and are not being pushed aside by larger siblings.