Study: North American bird population has declined by 2.9 billion since 1970
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Sept. 19 (UPI) — North America’s bird population has declined by nearly 3 billion in the last five decades, according to a…
Sept. 19 (UPI) — North America’s bird population has declined by nearly 3 billion in the last five decades, according to a…
North America's birds are disappearing from the skies at a rate that's shocking even to ornithologists.
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
An extensive study of hundreds of bird species across decades worth of data has for the first time estimated how badly numbers…
North America has lost nearly 3 billion birds since 1970, according to a new analysis of bird survey and radar data.
There are 2.9 billion (yes, that's billion with a B) fewer birds on the North American continent today than there were 50 years…
En Europa o Norteamérica han desaparecido hasta la mitad de las aves más comunes en unas décadas En los alrededores del lago…