Another mystery solved

From time to time, our smallest cat Daisy shows up with small scratches on her face and ears. She's not getting them from rough play with the other cats. Yesterday as I was walking through the back yard, I saw her jump right up into the larger branches of the Mermaid rose that grows over a trellis in the back yard. The Mermaid is near both bird feeders and there are two ground level bird baths near it, so its good shelter is something smaller birds like the wrens, cardinals, titmice, and chickadees take advantage of. Daisy was chasing a bird and now has a fresh scratch on one ear. She is not so small as a wren, but almost as nimble, and the Mermaid has big thorns.