1. One skilled in ornithology.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ornathologist,
• orinthologist,
• irnithologist,
• krnithologist,
• lrnithologist,
• prnithologist,
• 0rnithologist,
• 9rnithologist,
• oenithologist,
• odnithologist,
• ofnithologist,
• ornitholigist,
• ornithologyst,
• ornithoosis,
• ornihtologic,
• orinithologist,
• ornatologist,
• orniologist,
• ornitholodgist,
• ornatholgist

• ornithological,
• ornithopoda,
• ornithology,
• ornithogalum,
• ornithopter,
• ornithosis,
• ornithopod.

The adjective form of the word "ornithologist" is "ornithological".

The plural of the "ornithologist" can be the "ornithologists".

The singular of the "ornithologist" can be the "ornithologist".