I like this alot although I have a suggestion if you don't mind that is...
I'm thinking because the title is used as a fourth line maybe it would work better having a synonym for jungle for example wilderness, the wild.. Just with jungle being the lady line of the third line, if that makes sense? It's only a suggestion and maybe I read this completely wrong but with it being a senryu, it threw me off balance a little other than that a great piece.
Take care x