Posts: 18,389 Country: England Pets: Ants, 1 Canary, 7 Finches, 2 dogs and 1 wife Favourite Ant: Formica rufa & Camponotus habereri I Like: Daleks, History and good movies. I Hate: Very spicy food and hot curry. I Am: A Senior Citizen Joined: April, 2008 Likes: 4,604
My best count was 23 active foragers at any one time and this was done last week when we had a hot day in my area.
As to nest numbers I would say that it has to be between 100-150 workers by now given the quantity of brood being moved today.
I shall be creating my viewing panel soon and hopefully the Nigers will chamber against the glass once blacked out. I do this by painting the sides with white exterior paint leaving parts of the glass unpainted. I cover the unpainted parts with thick black card thus blocking off the light and absorbing extra heat from the Sun.
This was very successful at my old house and they stayed alongside the glass for years. Never once saw the Queen however.