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).
1980
1984
2023
2001
2006
1952
2020
2011
1986
2017
2022
2016
2007
2013