I'm far from expert on this, but you'll ned to wait till the eggs are layed to determine if they're fertile first. The chance of that happening between two totally unrelated species is very slim. Not impossible, but unlikely. As far as incubating them, once fertility is determined, I'd check online for caresheets of them both and figure a temp from there to start with. Sorry I can't be more help.

Quig
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Don't interupt me when I'm talkin' to myself