The Amazon feed ports are the absolute way to go. They are cheap, good quality and come with a hole saw. You can have 4 feeders with 16 total ports for about $50.
I don't use food safe buckets. you need time and or liquid to leach chemicals. I have so many birds that i fill
The buckets once a...
I just fill my feed buckets when they are empty and let them eat whatever they want. I have zero idea how much that is, until I gasp every few weeks at the feed store.
Incredibly accurate. I have a cockerel who looks to wish me dead if the scraps are skimpy that day.