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).
2009
1952
2020
2004
2010
2012
2003
2002
2021
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2011
1989
1951
2019
1945