I feel like a bird <--Make your space here. Formatting it in the middle doesn't work
I feel like a bird, lightheaded and dumb <--might want a comma at the end
I feel like a mouse obsessed with crumbs <--Since you described the bird with a comma, you might want to do the same with the mouse...Not sure if you can, though
I feel like a pig rolling 'round in the mud
I feel like rose, a bee is my bud <--Thankfully you didn't put its complementary line...Although it feels like we need another line to bring us back to the first.
I feel like a bird, lightheaded and dumb <--I don't think this works.