Yep hes in love - the dropping of the wings and fetching up food are ways of attracting you as his mate - leaving him in his cage will only make him sad - he wants to be close to you - how about teaching him that your hubby is fun too - teach him some new tricks etc - distract him a little - but I will say that it never goes away - I have a Grey too who does the same - he has for years - distraction will help