After months of waiting/searching for a queen ant, I got home today to discover that the outside of my house has a very prominent trail of ants going from the ground all the way up to my roof. I saw one ant carrying a small pebble up there, so I'm guessing that's where the nest is. There was a lot of them. I captured one and took a couple pics in hopes that you folks could help me out with an identification. My location is British Columbia, Canada. Thanks so much.