birdnote.org Rank 731.9K. Estimated value 2,952$animalspot.net Rank 326.4K. Estimated value 6,648$birdfact.com Rank 380.7K. Estimated value 5,700$kidadl.com Rank 17K. Estimated value 130,524$surfbirds.com Rank 1.4M. Estimated value 1,560$whatbird.com Rank 1.2M. Estimated value 1,812$pigeons.biz Rank 1.6M. Estimated value 1,368$bto.org Rank 266.3K. Estimated value 8,172$beakcraze.com Rank 0.9M. Estimated value 2,268$birdsinbackyards.net Rank 1M. Estimated value 2,208$