Humane Research Species Switzerland 
10,000 Birds
MARCH 11, 2024
Given that according to the HBW, the species prefers dense primary and secondary montane forests, the note that the bird also forages among kitchen waste (in the same HBW entry) seems somewhat incongruous. Quite possibly, this laughingthrush is now locally extinct in Switzerland or at least in Basel.
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.
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