Mallard with 10 eggs

[Muffinstuff]

I have a pair that mate often that I can see in their pond. Its February in Texas and temps have gone from 20s at night to 50 to high 60s during some days.
She has 10 eggs as of today 2/12/20 but only goes to nest for about a hour (to lay I guess). They free range and do have a coop . Being the temps are crazy. Are the eggs still good or should I dispose of them?

 

[BirdsBeesTrees]

I would get rid of them myself. I would let them be when the lows are above 45 degrees myself. At 20 degrees they'd probably freeze and thaw and freeze and thaw; and that would kill any embryo anyway...