Swarming on a house-fly

Here's a shot of my Thai Tree ants swarming down their branch and onto the squished fly I gave them. I'm certain they sensed the chemicals the fly gave off, and the pheremones the first ants to find it gave off. I've never seen them swarm quite as much as this, they don't get quite so excited by woodlice!

There's a video of them swarming on my home page, check it out.

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