WHERE TO WATCH BIRDS IN ASIA
By Nigel Wheatly.  
The locations recommended by this book were spot on. It is a great reference for anyone who twitches in Asia.

FOOTPRINT GUIDE : VIETNAM 

FIELD GUIDE TO THE BIRDS OF SOUTH-EAST ASIA
By Craig Robson
This is your essential field guide. Its advantage is that it shows the various forms of each bird throughout SE Asia. Vietnam has at least a handful of birds that belong to a different subspecies from the rest of SE Asia. This book will reveal all those subtle differences.

TRIP REPORT BY NIGEL MATTHEWS 
(http://www.surfbirds.com/trip_report.php?id=403)

This is indeed a very good trip report. I used it extensively. It includes many useful maps and the narrative proved useful. Every birdwatcher going DIY in Vietnam should download and read it. The information in this report should be used to supplement some of the areas that are not covered there.

SINH CAFÉ OPEN BUS TICKET BROCHURE 
( front & back )

I only got my hands on those only when I arrived in HCMC. It is an inexpensive way to see Vietnam. Note that travelling around by train across the country will cost significantly more.

BUDGET AIRLINES’ WEBSITES

Tigerairways (www.tigerairways.com), Jetstarasia (www.jetstarasia.com) and Silkair (www.silkair.com) now fly to various cities in Vietnam from Singapore. Deeply discounted tickets (as low as S$1) are sometimes offered about 2-3 months before the date of departure. Do check their websites regularly for low promotional prices.