Why swallow tail horns? (Asian folk legend)

In ancient times all life was subordinated to the snake Hideharu. Once the serpent gave the mosquito a mission to find out who in the world the most delicious blood that Aydahar and began to eat. Long mosquito fly around the world and found that the most delicious blood in humans. On the way back he met the swallow, which elicited from the mosquito targets a snake. Swallow, determined to protect human, pulled out the mosquito part of the sting, and he could not tell snake the truth. Swallow said Hideharu that the most delicious blood... himself. The serpent was angry and wanted to grab a swallow, but she dodged, and aydahar only managed to pull out of the tail. Since then he she be bifurcated.