I wish to record my deepest thanks to the following for help with data on my site:
- Marek Kuziemko
- Edward Dickinson
- Alan Peterson
- Jan B. Kaiser
- Torgny Fridlund
I also wish to thank the many photographers who have given permission for me to include their bird photos on my website:
- Arthur Grosset
- Nick Athanas
- Bjorn Johansson
- James Eaton
- Glen Tepke
- Paul Meek
- Shahril Dzulkifli
- Craig Robson
- Nick Borrow
- Suppalak Klabdee
- John Corder
- Trevor Hardaker
- Tomasz Tańczuk
- William Price
- Hans & Judy Beste
- Leonardo Patrial
- Santiago Imberti