Vitamin supplements in winter

Do you give vitamin supplements during winter when birds aren’t racing?

I’ve been giving a multivitamin twice weekly but wondering if it’s necessary or overkill when they’re just maintaining.

Winter supplementation is less critical than during racing or breeding, but not useless.

Reasonable winter schedule:

  • Multivitamin: once weekly
  • Minerals: always available
  • Vitamin D: important if birds don’t get much sun

Twice weekly is fine but once weekly would probably suffice. Save the heavy supplementation for when they’re working hard.