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Deby Cassill in 2009 broke with tradition and calls certain periods of rest in ants sleep.. Working with fire ants, she videotaped ants in an artificial nest. She created an artificial colony with three queens, 30 workers and 30 larvae. Checking the posture and position of the antennae, she concluded that queens sleep 90 times per day for 6 minutes per nap, whereas workers dosed 250 times per day for roughly one minute at a time.
Ants love sugar! If you have ever dropped a slice of orange on a path when ants are about and left it undisturbed for a while, you will have noticed that after an hour or two there will be a collection of worker ants around it, all drinking the sweet sugary juice.