Opposum predator?

[newbietothegame]

I just got 2 hens (one new Hampshire red, one white leghorn) about 4 weeks ago. I adopted them from a neighbor. We have a run and coop, but a possum made it into the pen last night and got my red! I'm so devastated! There is a small open area at the top of the run that I usually put a flap over and I forgot last night. But I have a security camera on the coop and it looks like he came in another way? He was pretty big but I'm wondering how small they can make themselves. And how should I bury my sweet hen? I found her under the coop this morning and she was eaten. I am just so sad.

 

[ChickenCanoe]

Very small.
Possums and coons can get into about 2" or so depending on the size of the animal.
On another note. Mink and weasels have no problem getting into a 1" hole so the only way to keep the birds safe is to have no opening larger than 1/2". Hardware cloth over all openings.

 

[newbietothegame]

Thanks. Off to button up the area tight today.