Pheasant egg

I have 4 laying hens, about 12 weeks old.  I also have 3 Cayuga ducks, about 20 weeks old, both all well known for their egg laying.  I also have 38 hen pheasants, about 10 weeks old (although some are looking roo-like in their plumage.)
So imagine my surprise to find that the first egg of Two Mile Ranch is a pheasant egg in the fly pen this afternoon.  The pen is thick with 6 foot tall weed growth, and the egg as at the edge of the weeds, laying on the bare ground.

As thick as the cover is in the pen, it is likely there are other eggs in there.

Weed and cover growth in the fly pen. The fly pen is 25 x 45 and 6 foot tall.