Do they look like they're laying? Plump red combs? If so, you might try confining them to the coop for a few days and see what you get. Free range often equals weird places to lay eggs.......
Ditto Dat^^^
Tho Ameraucana(probably EE) and especially Wyandotte can be slower to come into lay......they could be laying in range area.
Time to check some butts, if you really want to know:
Vent Appearance:
Dry, tight, and smaller - usually not laying.
Moist, wide, and larger - usually laying.
Pelvic Points 2 bony points(pelvic bones) on either side of vent:
Less than 2 fingertip widths apart usually means not laying.
More than 2 fingertip widths apart usually means laying.
Then maybe lock em up for a time:
Free range birds sometimes need to be 'trained'(or re-trained) to lay in the coop nests, especially new layers. Leaving them locked in the coop for 3-4 days (or longer) can help 'home' them to lay in the coop nests. Fake eggs/golf balls in the nests can help 'show' them were to lay. They can be confined to coop 24/7 for a few days to a week, or confine them at least until mid to late afternoon. You help them create a new habit and they will usually stick with it. ..at least for a good while, then repeat as necessary.