Brewers yeast - worth adding?

Keep seeing brewers yeast recommended. What does it actually do?

Is it worth the expense or just another thing to sell to pigeon keepers?

Brewers yeast is high in B-vitamins and protein. Legitimate nutritional value.

Benefits:

  • Supports feather growth
  • Good during moult and breeding
  • Natural, not synthetic

Not magic, but a solid supplement. I use it during moult and breeding, not year-round.