Birds becoming extinct: worse than thought so far?

This 2011 video is called Unique birds of Hawaii.

From BirdLife:

According to the IUCN Red List, 131 bird species have become Extinct since 1500, with an additional four species surviving only in captivity and classified as Extinct in the Wild.

But a new paper by BirdLife’s Stuart Butchart and Alison Stattersfield and Conservation International’s Tom Brooks argues that the number of recent extinctions documented on the Red List is likely to be “a significant underestimate”. …

Some Possibly Extinct species have not been recorded for more than 50 years, with the record being held by Hooded Seedeater Sporophila melanops – not seen since it was discovered in central Brazil in 1823.

Others have undergone well-documented declines, such as the Oloma’o Myadestes lanaiensis, a Hawaiian thrush that was last seen in 1980 following its disappearance resulting from habitat destruction and introduced avian malaria.

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