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).
1994
2017
2007
1970
1966
1968
2021
1991
1962
2000
2015
2008
2019
2023