North Bengal & Sikkim : Trip Reports 

Hot Spots Tours Bird List Trip Report Lodges Map

http://www.birdtours.co.uk/tripreports/india/india11/sikkim2002.htm

Jan Vermeulan: Birding tour to Lava and first ever birding tour
to TholungValley in Sikkim. : March-Apr 2002
 

http://www.club300.se/resedatabas/filer/Sikkim_and_West_Bengal-RA.pdf

Roger Ahlman: North Bengal & Sikkim Apr 2004
North Bengal: Mahananda, Samthar, Lava, and Singelila- Sandakphu
Sikkim : Vershay ( First report), Pamayangtse and Khichepheri Lake