I just saw this thread. I know what you mean about the mosquitos. I was going to vaccinate, but didn't this year, and I was considering putting mosquito netting around the aviery, as on the many dank and rainy days we've had this year, mosquitos are always around more. On those days, I just put a screen in the window to the aviery to keep the birds in the loft, and the mosquitos out. But it would be better if they could go outside on these days. Next year, I'll have to vaccinate.