Matsya Purana 209.30

209.30

haṃsaṃ sabhāryaṃ sarasi vicarantaṃ sunirmalam.
sumuktasyendubimbasya paśya vai śriyamudvahan .. 209.30 ..

See this crane walking about with his female on the banks of that pool, and mark his colour resplendent like the moon emerging out of the clouds—30