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).
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1956
1975
2011
2012
2023
1952
2016
2019
2009
1985
2004
2020
2007
1927
2006
2014