how long for swan eggs incubating until you throw them out??? HELP!!!!

Buttercup Chillin

Songster
11 Years
Oct 27, 2008
1,449
21
161
SouthEast TX
No one has answered you so. I don't realy know about swans, but I do know that Muscovies and Swans have the same incubation time of 35-37 days. I have Muscovies and they will sometimes go 39 days when set by a Hen, (this was in the winter). It is sometimes hard to set the date of when a hen sets the eggs.

I would say that if the eggs haven't hatched by day 45 they aren't going to. If the eggs have turned dark and are real smelling they are no good. Don;t even open them.
 

High Roost Ranch

The Chicken Whisperer
11 Years
Dec 15, 2008
1,230
14
176
St Tammany Parish, Folsom, Louisiana
Try candling the eggs. I had to do that with my egyptians. They are a newly put together pair and she sat a clutch. I candled after 3 weeks of her setting tight and sadly all were clear. So I pulled them in hopes of her laying another clutch after accepting the male.
 

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