Neha Patil (Editor)

San Benedicto rock wren

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Kingdom
  
Suborder
  
Passerida

Phylum
  
Chordata

Rank
  
Subspecies

Class
  
Aves

Family
  
Troglodytidae

Genus
  
Rock wren

Order
  
Passerine

San Benedicto rock wren

Similar
  
Rock wren, Passerine, Slender‑billed grackle, Hawkins's rail, Saint Helena swamphen

The San Benedicto rock wren (Salpinctes obsoletus exsul) is a small extinct passerine which was endemic to San Benedicto Island in the Revillagigedo Islands off Mexico. It was a subspecies of the rock wren.

Extinction

San Benedicto is a volcano, like all the Revillagigedo group. Unlike, for example, Roca Partida, it was still active in recent times. On August 1, 1952, lava fountains started to break out of the Boquerón vent, located in a rift between the two older volcano cones. By around 8:45, ejecta were thrown up for several km in a severe vulcanian eruption of magnitude 3 on the Volcanic Explosivity Index scale; pyroclastic flows rolled over the island.

Two weeks later, the entire island was covered in ash and pumice up to 10 ft (3 m) high. Bárcena crater, nearly 1100 ft high (over 300 m), rose where the wren's habitat had been before. The birds were never seen again.

This rock wren was the only endemic terrestrial bird on San Benedicto. It was one of but two landbirds on San Benedicto, sharing the island with western ravens which were wiped out by the eruption too.

References

San Benedicto rock wren Wikipedia


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