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).
1975
1976
2005
2017
1997
2020
2016
2011
2019
2013
2015
2007
2023
2021
1961
2006
