Can anyone help with Mallard egg question(s)?

[Punk-Rock_Chicken]

I have a coop shared with 4 laying hens and a Mallard hen. This morning I got my first egg from that coop and it was medium sized and green. I'm trying to figure out who done it. I am certain that 3 of my layer breeds lay brown eggs and uncertain about the color of the 4th. I was told this morning by other BYCers that Mallard eggs are green, BUT my questions are... Aren't Mallards "seasonal" layers and lay in the spring? Do they lay single eggs or don't they usually lay a clutch at time? And don't ducks (unlike chickens) require a drake to do so? I am probably WAY off on all accounts and need somebody to educate me!

Thanks

 

[xfilesnumber1fan]

I have lots of mallards and yes the are greenish not to big as my girls are small..I think if they lived in the wild the eggs would then be seasonal but mine lay alot even through winter they only stopped with the molt that started around Feb and ended in April and startes laying again.They are sitting right now...Do not have to have a drake for eggs..
Here are 2 sharing a nest..Mother and daughter also

 

[ChickBond 007]

My mallards lay 1 egg per day when it is warm. Their eggs are whitish-green.
Edited to say: drake is only needed for fertile eggs. Infertile duck eggs = best baking eggs. Bake bread.

 

[monarc23]

I also read that ducklings (even wild mallards) born in the spring mate around august. And it is the same for domestic mallards

Spring babies mate their first season