I have been doing some reading on vitamin c, seems though birds produce their own and usually don't need it, but can benefit in hot or cold extremes.
I knew about the hot weather and usually toss in tomatoes from the garden. I didn't know about the cold though! So after some reading i found that a lot of dark leafy greens have C and calcium too, so i tossed in some baby spinach yesterday in preparation for today's cold snap. Today they didn't even hesitate when i tossed them, bee lined!
Also by default (i was a second too late to get the last bag of oyster shell) i am trying out the manna pro omega supplement. Girls don't seem to know what to think of the crumble, but are trying it out. I'm keeping it in a separate dish right now tossed in with the grit. When i get some oyster shell i want to put those in the same dish so they know what it's supposed to be! LOL. It's pricey at $12 a 5# bag, but says that it can be mixed in 50# of feed. If i can find some kent blue seal crumble for adult birds, i may.
When i get down to only 4-6 birds i'll probably just start making my own mix for them with the manna pro omega+calcium supplement, plus the showbird conditioning pellets, (they can be mixed 50/50 with scratch and scratch grains/ ground horse feed from the mill with the molasses.......Will be expensive but i really want pets and i'm so heart sick when i lose one. I've yet to keep one past 2 - 2 1/2 years, and according to the poultry health handbook they can live up to 15.