When might the eggs hatch?
For cockatiel, the consulted source indicates a window of 18 to 21 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 count begins at the observed incubation, which may occur after the first egg is laid.
What this estimate means
For breeders who need to check a hatch window quickly, including aviaries incubating eggs from several species.
How to use the calculator
Confirm the species
Choose the common name and confirm the scientific name shown below the selector. Similar species can have different periods.
Use the date indicated by the calculator
Enter the date when regular incubation was first observed. Record the date each egg was laid separately, because later eggs may hatch after the window shown.
Read the estimated window
The result shows the source-supported range for planning the clutch's first hatch. It does not invent a most likely day or calculate each egg individually.
One date, several possible answers
The same reference date produces different windows because the period belongs to the selected species.
- cockatiel
- 18 to 21 days
- budgerigar
- 17 to 20 days
- rosy-faced lovebird
- 22 to 23 days
- domestic canary
- 13 to 14 days
- rose-ringed parakeet
- 23 to 24 days
- zebra finch
- 14 to 15 days
- domestic pigeon
- 17 to 19 days
Before using the result
- Confirm common and scientific name.
- Use the reference date indicated for the species.
- Treating the window as an estimate, not a guarantee.
- Remember that eggs laid later may hatch after the reference window.
- Compare the prediction with the observed hatching.
Common mistakes and how to avoid them
Apply the same period to all birds
The duration changes by species. The selector also shows the scientific name to reduce ambiguities between common names.
Confusing laying with consistent incubation
Read the date label after choosing the species. The time frame used must follow the source of that calculation.
Create artificial certainty
The window is an organization tool. It does not assess fertility, development or egg health.
Sources and limitations
These sources provide context for the method and the Brazilian market. They do not make this article veterinary or legal advice.
- Lafeber: cockatiel incubation countGuidance from a veterinary team: 18 to 21 days from the beginning of incubation of the eggs.
- Avian Medicine: selected incubation periodsVeterinary table identifying selected species and groups, including cockatiel, rose-ringed parakeet, canary, pigeon and budgerigars.
- 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.
- Bucher and Barnhart: development of rosy-faced lovebirdScientific article that identifies the species and describes an incubation period of 22 to 23 days.
- Animal Diversity Web: rosy-faced lovebirdUniversity source that describes around 23 days and contextualizes the clutch on alternate days.
- Turkish Journal of Agriculture: reproduction of the domestic canaryArticle describing the hatching of the domestic canary on the 13th or 14th day.
- IEMA-ES: names used for exotic birdsBrazilian public list used only to confirm common names such as collared parakeet, red-rumped and omnicolored parakeet.
- Animal Diversity Web: Fischer's lovebirdUniversity source that identifies the species and has an incubation period of 21 to 23 days.
- Cold Spring Harbor Protocols: zebra finch breedingScientific protocol that indicates incubation begins after the last egg and lasts 14 to 15 days.
- Developmental Dynamics: embryonic development of zebra finchDevelopment study that observed hatching in 14 days and parental average close to this value.
- NatureServe Explorer: Columba liviaConservation base that presents 17 to 19 days and informs that both sexes incubate.
The calculator gives the date. Gudnest keeps the rest.
Use this calculator whenever you need, without signing up. If you also want to track birds, pairs, clutches, eggs and hatching events over time, you can do so on the Gudnest app.
See how Gudnest works