I have been trying to estimate rates of mortality due to human causes, but this requires estimates of population size. I have developed two methods for estimating global population size of all birds. However, I wonder if anybody has come up with an alternative estimate.
Thank you for your help.
Yours sincerely,
Anders Pape Møller
Dear Anders and Jacqui,
I cannot help but perhaps it is worth to look at the recent article in Nature about the number of trees in the world. It would be exciting if you would put together a consortium that calcualtes the number of birds in a similar way. I am sure data are better than for trees.
Best wishes,
Bernhard
http://www.nature.com/news/global-count-reaches-3-trillion-trees-1.18287
What a neat question, Jacqui & Anders.
Perhaps this website might help? http://www.gbif.org/
Cheers! Jessie
Wow! How do you quantify this entity?!? Await to see what the answers will be!
Big challenge! Let me know the result. I would like to do for rat....
İ can onlytell that in 1970s total number of birds in the üorld üas estimated in 100 billuion individuals ( manual for ornithology in USSR). İt seems noü their number must be lesserş
Article: How many birds are there?
Kevin J. Gaston · Tim M. Blackburn
[Show abstract]
Article · Apr 1997 · Biodiversity and Conservation
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