I am keeping my geese (along with chickens and a turkey) in a 3 sided shed with the open side fenced in. I did so in order to grow some rye grass for the winter. To the side of the shed I have an area that has been left wild under a huge Water Oak tree. A couple months ago I went in and cut the underbrush that had grown up. I was thinking of making a second pen to let the fowl enjoy while their rye grass was growing. When I went there yesterday to burn some of the limbs I noticed that the blackberry canes were very sharp. and spread out among the leaf-litter from the Oak. There are also "mini-stumps" from the underbrush I cut that make walking uneven. I am sure my chickens would love to go and mess around in the leaf litter and the turkey could have its fill of acorns but I was wondering if the blackberry canes, and other spiky vines, and brush stems might irritate the geese's feet.