Auto Bird Feeder

cults3d

I looked about for a bird feeder and could not find on to suit me so I designed this will hold a 500ml or 1 litre pop/soda bottle, it has 3 outlet holes to minimize any blockage of seed, simply fill a pop/soda bottle with bird seed and leave it the seed will automatically refill as the birds feed, I have made this strong enough to take the weight of a 2 lite op/soda bottle, I have also made the screw hole slightly bigger to fasten it to a tree/fence or wall.