How do I get my mandarins to lay?

[EmmaGRS]

I have a pair of mandarins that I got last winter. They didn’t lay last year and they haven’t started laying this year. They have a relatively large pen, a big bowl of water I clean out once a day, I feed them Mazuri food, and I have a wood duck box for them to lay in. What could be causing her to not lay? My only thought is stress, but I don’t know how to eliminate that for her. Any suggestions? Advice? Thanks

 

[nuthatched]

Are you sure they're female? I think Mandarin ducks lay seasonally.