crittercleanout.com Rank 1M. Estimated value 2,208$birdsoftheworld.org Rank 209.4K. Estimated value 10,404$audubon.org Rank 61.9K. Estimated value 35,532$birdwatchingbuzz.com Rank 341.6K. Estimated value 6,360$whatbird.com Rank 1.2M. Estimated value 1,812$birdwatchinghq.com Rank 258K. Estimated value 8,436$ornithomedia.com Rank 2.8M. Estimated value 768$hancockwildlife.org Rank 1.9M. Estimated value 1,152$animalcorner.org Rank 258K. Estimated value 8,436$sonomabirding.com Rank 1M. Estimated value 2,136$