Geese and PVC feeders

[Wild Hair]

I'll soon have some ducklings and soon after that some Buff African goslings. I plan on making a PVC feeder of sorts and was going to do it out of three inch pipe and fittings. Is this going to be large enough for the geese to use also?

 

[Wild Hair]

I guess my first question should've been...will they even use them in the first place?