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).
2020
1963
2004
2014
2001
2021
2010
2008
2019
2017
1969
2003
2023
2018