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).
1997
2015
2025
2019
1986
2017
2016
1954
2021
1931
2014
2013
1953
2009
2000