In 2016, Dutch birdwatcher Arjan Dwarshuis traveled the world to spot as many birds as possible in the span of one year, with the goal to break the big year world record (6042 species, set by Noah Strycker in 2015).
1964
2013
2014
2020
2018
2021
2011
2010
1933
2015
1997
2025
2022
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2012
2009
1973