Four-legged Bird?

Are the birds growing fur and four legs from the sunflower I put out?

This pregnant doe must have needed something in her diet that came from my birdfeeder. I've since taken the feeder down but she has been back recently to check if I still had it up. It's not going up until Fall. I do see fewer birds, especially the woodpeckers who visited regularly. They'll be back as soon as it reappears.