Frog back from dead

AN endemic frog species which has not been sighted for three decades and was declared extinct, has made a shocking reappearance in Costa Rica.

The Heredia robber frog, whose scientific name is Craugastor escoces, had been declared extinct by the International Union for Conservation of Nature in 2004 and had not been observed since 1986.

But Costa Rican biologists Gilbert Alvarado and Randall Jimenez reported on Tuesday spotting the frog in the Juan Castro Blanco National Park in the Alajuela province.