Duck egg has dark spots?

[Angelgracebonnett]

My duck egg has dark spots ? Is it bruising ?

 

[MGG]

My duck egg has dark spots ? Is it bruising ?

What breed? What day is it on? What is the temp and humidity? Have you candled it recently? Movement?

 

[Angelgracebonnett]

What breed? What day is it on? What is the temp and humidity? Have you candled it recently? Movement?

They are mallard ducks, we candle them everyday, we’ve had them for a week but they’re older than a week, yes there has been movement but has been moving less recently. If you can, check out the recent pictures of the egg I posted.