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
2018
2014
1994
2019
2015
2017
1940
2009
2016
1980
2001
2002
1958