An egret on a water buffalo, Kuruwita, Sri Lanka.

Domesticated water buffalos are used extensively in agriculture, from time immemorial in Sri Lanka. Egrets live in symbiosis with the water buffalos. The insects stirred up from the soil by the water baffalos, form an ideal source of food for the egrets. The egrets also pick the ticks from the water buffalos, benefitting the water buffalos. I took this picture on the road to Bopath Ella, the beautiful waterfall, from Kuruwita.