The drying lakes are recharged. Parched habitat turns green once again. Waterlily blooms all over the lake and other hydrophytes grow spontaneously. A canal form Ajan dam brings more water to the park, along with which come millions of fish fry and other microorganism. Aestivating turtles come to life once again.
Frogs start croaking.
Sarus cranes dance. Seventeen species of birds, namely, grey heron, purple heron, night heron, large egret, median egret, little egret, cattle egret, large cormorant, Indian shag, little cormorant, darter, painted stork, open-billed stork, blacknecked stork, whitenecked stork, white ibis and spoonbill are know to breed at Keoladeo heronry. The heronry is almost exclusively built on modest sized Acacia trees submerged in the marshes or on islands in their lakes. Open-bill stork, not so commonly found otherwise, breeds here in large number. They are quiet and concentrate in one part of the heronry.