- Who
- Leipoa ocellata
- Where
- ()
The longest incubation was recorded in the case of an egg of the mallee fowl (Leipoa ocellata), Australia, which took 90 days to hatch, compared with its normal 62 days.
A very small number of birds incubate their eggs for longer than 70 days: the wandering albatross (Diomedea exulans), for 75–82 days; the royal albatross (D. epomophora), for 75–81 days; and the kiwis (family Apterygidae), for 71–84 days.
