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).
2017
2010
2019
2016
2022
2006
2025
2023
2011
1970
2012
2024
2000
1997