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).
1963
2014
2019
2018
1978
2013
2023
2021
2022
2016
1972
2017
1985
2006
2005