Cyclidia rectificata

Moth Taxon Search
Cyclidia rectificata
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Saw them in hundreds roosting like monarchs on a tree branch hanging in the middle of a river. Do these moths also migrate or this is just a roosting behaviour after mass emergence? Have this behaviour been recorded before for this species? Kindly share any ref or links where I can read about this a little if you are aware of. Thanks!
Observation Reference