Sustainable aluminum bird feeder, which is 4.5” outside diameter and 4.25” deep. Includes (1) stainless steel eye hook for mounting the bird feeder.

https://www.fabonline.net/birdfeeders

This is a very tough birdfeeder that will hold up to the elements and any damage.  Aluminum is very sustainable and when this birdfeeder reaches the end of it's life it can be scrapped and made into another product unlike flimsy plastic birdfeeders which will end up in a landfill.

This birdfeeder is also available post mounted if preferred that way.