Hamsa

http://en.wikipedia.org/wiki/Hamsa_(bird)
https://www.youtube.com/results?search_query=Swan+Bird  

1. http://brahmasaraswati.blogspot.com/2014/07/hamsasana.html 
2. http://brahmasaraswati.blogspot.com/2014/07/hamsavahini.html 

Hamsavahini

https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=1280&bih=600&q=Hamsavahini 
https://www.youtube.com/results?search_query=Hamsavahini