10,000 Birds

MARCH 30, 2015

(That impressive number is a testament to the exponential advances in DNA-sequencing technology, but the researchers are quick to note it’s still less than 1% of the total genome.). Furthermore, another redpoll species found in Europe—the Lesser Redpoll—also had extremely similar DNA sequences.

Species 209

Species Switzerland Groups Europe 209

10,000 Birds

MAY 10, 2015

In its natural old-world range, the House Sparrow offers an interesting identification challenge and has vagrant potential since it is a polytypic species with a highly complex taxonomy. The genus Passer has several well-recognized and recognizable species in Europe, and still holds several enigmas.

Sparrows 210

Sparrows Italy Asia Austria 210

10,000 Birds

MARCH 3, 2020

That’s pretty amazing–Bolivia has more bird species than India! The source of this ranking, BirdLife International, lists Bolivia as currently having 1,439 bird species, including 18 breeding endemics. The guide covers 1,433 species, the number of birds documented at the end of 2014, the cutoff point for the book.

Bolivia 169

Bolivia Birds Brazil Switzerland 169

10,000 Birds

FEBRUARY 5, 2012

This thrush is extremely common in urban and suburban Germany and one of the most conspicuous bird species here, comparable to the American Robin in North America. It appears as if some bird species are more susceptible to an infection than others, but many species are affected.

Germany 159

Germany Blackbirds 2006 Denmark 159