When might the eggs hatch?
For budgerigar, the consulted source indicates a window of 17 to 20 days.
Choose a date to see the estimated window.
This is a planning estimate, not a guarantee or a prediction for each egg. Eggs laid later may hatch after this window. The eggs are laid in sequence and can hatch on different days; follow each egg.
What this estimate means
For Melopsittacus undulatus breeders who track eggs as they are laid and need to plan the first hatch without guessing when later eggs will hatch.
How to use the calculator
Note the beginning of incubation
The female may begin incubating between the first few eggs. Record what you observed in the nest and also keep the date each egg was laid.
Calculate 17 to 20 days
The result displays the first and last day of the window. The value of 18 days found in veterinary references is within it, but is not treated as a promise.
Keep track of the order of the eggs
Parakeets lay eggs in sequence and hatching can be asynchronous. Use proper identifiers to avoid assigning a chick's date to the wrong egg.
Example for a budgerigar clutch
Starting on September 1st, the estimated window will be:
- Observed start
- September 1
- Start of window
- September 18
- End of window
- September 21
Before using the result
- Confirm that the bird is recorded as Melopsittacus undulatus.
- Note the order and laying date of each egg.
- Use the observed start of incubation as a reference for the calculator.
- Record each hatch separately.
Common mistakes and how to avoid them
Mistaking the entire clutch for a single egg
The eggs are not laid at the same time. A single date can erase the real order of egg-laying and hatching.
Changing the common name to another species
Confirm Melopsittacus undulatus, because popular names may vary and the period belongs to the selected species.
Discard the observation because the window has ended
The window is organizational. An egg or bird concern should be evaluated by a qualified professional.
Sources and limitations
These sources provide context for the method and the Brazilian market. They do not make this article veterinary or legal advice.
- UFRRJ: reproduction of budgerigarsBrazilian dissertation that presents an incubation period of 17 to 20 days.
- Merck Veterinary Manual: approximate periodsVeterinary reference that presents 18 days for Melopsittacus undulatus.
- Acta Scientiarum Polonorum: hatching of parakeetsBreeding study that describes laying at intervals and beginning of incubation from the first few eggs.
The calculator gives the window. Gudnest keeps the history.
Use the calculator without signing up. To track birds, pairs, clutches, eggs and hatching events over time, use the Gudnest app.
See how Gudnest works