Bardiya National Park
The park has a surface of 968 square kilometers.
Flora and fauna
The park hosts tens of different mammals species and hundreds of different bird species.
The best season to visit the Bardiya park is from March to June. Though the temperatures are highest during that period (up to and exceeding 42°C), it's the best time of year to see animals (especially tigers) since a lack of water in the jungle drives them to predictable watering holes, and tall grass and other foliage is at a minimum. The rainy season is fromn July to September.
There are buses from both Pokhara(~12hrs) and Kathmandu(~17hrs) directly to Bardia or to Nepalgunj which is another couple hours by bus from the entrance of the park. Buses from Nepalgunj and other surrounding cities just going by the park can drop you at Ambassa/Aambassa which is another 16km away from the entrance, but any hotel will come pick you up there for free. You can ask to be let off at Kohalpur from buses headed to Nepalgunj and then get a bus from there to Ambassa or directly to the park entrance if you're lucky.
You can fly to Nepalgunj and then follow the instructions above for getting to the park. Hiring a private taxi from Nepalgunj to the park entrance is also possible.
The fee for foreigners is 500nrp per day which should be included with any jungle walk/jeep safari/rafting package.
Volunteer. Ask around locally & in the guesthouses. Mr.B would be a great help here and almost anybody in the village would be able to help out and recommend something or somebody. There are an incredible number of schools between Thakurdwara and the highway junction at Ambassa for such a short distance and English speakers/teachers are obviously always welcomed enthusiastically, generously and with wide, open arms.
So, basically just turn up and do the ground work when you arrive. Shouldn't take more than a few days to sort something out. Krishna Karmal at 'The Wild Route' Guesthouse is somebody who would be able to offer info and ideas also. Track him down and talk it over some rice beer.
Eat and drink in town as much as you can. Some great tea shops in the 'centre' of town (ie the three all next door to each other) over the bridge. Reputedly the best tea in town. All much of a muchness though. Dal Bhaat around 100Rs. Grab a plate of chaana, a chia and watch the village ramble by.
Heading down the road towards the National Park entrance on the right(about 200metres from the shops above) next to the pharmacy and little book shop is another excellent tea shop. Tea, samosas, doughnuts also here. Absolutely essential is the purchase of a bowl of 'chola'. Look for the outside stove.
Local alcohol. Rice Wine(roxi) and rice beer(chaang).
There are some resort which provide tourist accommodation.