Photo queen and worker:
51fa9c12c5b22aeb.jpg
456b8b87888519cf.jpg
c3cea02e14c10d1d.jpg
b6f7e238cc9660ef.jpg
Found in Kalgary in Canada.
My informed guess... though it's hard to see the colour
The last two are definitely the 'wood ant' (or a tiny chance of being a carpenter ant worker of the species Campono tus vicinus, but I still feel it's the wood ant due to the abdomen and red legs), both of which are very common here in Canada. I've always known the first two to be queens of the species 'common black ant' (tonnes in my area and very abundant).
Hope this helps and others can help.
Mikey :sign_welcome:
First thought, Formica bruins not sure about that. Just a thought.
these ants are everywhere were i live and it's not the wood ant because these ants are very picky about there nests so i would try soil or sand or thats what they have dugin in my experience but good luck. :)