Thank you. Can they eat blackberry leaves.1 might be a senecio, that would be toxic.
2 looks like geranium robertianum to me or some other kind of geranium. My torts don't like it but I don't think it's toxic. The plant on the left looks like galium aparine (is it sticky? Then it's edible) and if the small plant in the middle is thorny, it's some kind of rose (edible).
3 no idea, wait for flowers.
4 must be some kind of thistle, so I guess it's edible. The flower on the right is an Aquilegia (I would say Aquilegia vulgaris). As far as I know it's toxic for mammalia, but my torts like it, especially before it starts to bloom.
Yes.Can they eat blackberry leaves.