The two nine week old boys currently residing in my Roo Pen broke out of their confined area and got in with the adult hens during the afternoon treat time, and were eating away at the black watermelon seeds. Up till now, I've given my baby birds only cut up pieces of watermelon -- and none with seeds. The grown up birds get the wedges themselves, and the seeds embedded in the watermelon wedges. I think they ate a lot of watermelon seeds before I found them and fetched them back to the Roo Pen. Can this harm them? They have lived outside for four weeks now, where they have access to our native clay soil and some grass that they are still eating away at.