How long do black swan eggs take to hatch?

I am not an expert, but have been learning much about Swans. We rescued an injured Mute Swan from a local River and have been caring for him at a Swan Farm in Pennsylvania.
How long does it take for a turkey egg to hatch?

How long does it take for a turkey egg to hatch?

Turkey eggs usually take 21 to 28 days to hatch depending on what they are incubated in like an incubator or by a hen. It also depends on how fertile it is and how it is cared
How long does it take a peewee egg to hatch?

How long does it take a peewee egg to hatch?

In the case of eggs, size does not matter. A fertilized peewee egg when subject to proper incubation conditions will take 21 days to hatch the same time it takes a jumbo egg t