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
1989
2019
2016
2021
2025
2024
2022
2023
2007
1988
2012
2005
2014