Garudan Thookkam (Eagle Hanging) is a ritual art form performed in Kali temples of south Kerala, south India. The people who dress up as Garuda perform the dance. After the dance performance, the hang-designate dangle from a shaft hooking the skin on his back. In some places, the ritual is performed colorfully with Garudas taken in a procession on bullock carts or boats or hand pulled carts. It will be available in Devi temple during the festival of Meena bharani and Pathamudayam in Thiruvanchoor in Kottayam district.

Legend has it that even after slaying Darika, Kali remained insatiable and thirsty. At this time Vishnu sent Garuda to Kali to quench the thirst. A dancing and bleeding Garuda was taken to Kali and only after getting some drops of blood from Garuda, Kali was pacified. The ritual is performed based on this belief.

Garudan Thookam is submitted as a reward for the problems solved in the abode of Goddess Kali. This is more popular in the areas of Travancore and Kochi. There is a famous Garudan Thookam at the Elamkavu Devi temple at Vadayar in Vaikkom taluk of Kottayam district. During the Aswathi, Bharani days of Meenam Month (Malayalam), more than 40 to 50 numbers of Garudan in the Thooka chadus, decorated and floated in thoni vallams (big country-boats), travel behind the Attuvela - a wooden structure constructed in the form of a three storied building which is considered as the floating temple of the Goddess Kali in the Moovattupuzha river. This is one of the best sights, with illuminated Structures. After the night long performance with the help of scores of chenda experts, the Garudans - bleeding after the Choondakuthal (Piercing of the skin on their back with a sharp metal hook) will be hung on a tall pedestal-like structure and taken thrice around the temple by the devotees. This is seen at the Pazhaveedu temple at Alappuzha district. But here the performance is done on a chariot-like structure on the road.

It is also done during Kumbha Bharani day, Airapuram Temple at Perumbavoor in Ernakulam District used to host more than 100 Garudan Thookam on Kumbha Bharani day

For more information: https://en.wikipedia.org/wiki/Garudan_Thookkam