10,000 Birds

MARCH 3, 2020

The source of this ranking, BirdLife International, lists Bolivia as currently having 1,439 bird species, including 18 breeding endemics. This is more than eBird reports–a checklist generated from the citizen science database lists only 1,413 species. Clearly, this is an under-birded country. . .”

Bolivia 168

Bolivia Birds Brazil Switzerland 168

10,000 Birds

AUGUST 4, 2022

These hornbills have the well-tried breeding strategy of enclosing the female in a tree hole. Breeding success in White-fronted Bee-eaters depends strongly on helpers, mainly by reducing the number of chicks dying of starvation (which at 48% of all chicks is indeed frightfully high). His music is rather bad, after all.

Swaziland 147

Swaziland Landlord Birds Sweden 147

10,000 Birds

MAY 19, 2011

Loons hardly ever fly when they are on their breeding grounds or their winter-water, but the migration is for many loons a non-trivial distance. Annals of the New York Academy of Sciences, 1046 (1), 282-293 DOI: 10.1196/annals.1343.026 And then there is the loon. The same may well be true of navigation. 2 PIERSMA, T., PÉREZ-TRIS, J.,

Research 187

Research Humane Compassion New York 187