Best Wildlife Photos of the Week

Sparrows perch on fence posts in the Ivanovo region of Russia.
Photograph: Vladimir Smirnov/TASS

A red handfish – researchers in Tasmania have discovered a new population of the extremely rare fish, doubling the total estimated population to about 80.
Photograph: Antonia Cooper for Reef Life Survey, supplied by the University of Tasmania.

A robin in Frankfurt zoo, Germany.
Photograph: Armando Babani/EPA

Endangered Sumatran elephants with their recently born calf at Balai Raja Wildlife Reserve in Pekanbaru, Indonesia.
Photograph: Afrianto Silalahi / Barcroft Images