14 February 2020
Vol 367, Issue 6479

About The Cover

Cover image expansion

COVER A satiny parrot snake (Leptophis depressirostris) preys on a frog. Tropical snake diversity declined after a fungal pathogen led to mass mortality of amphibians, a key food source. Snakes are generally rare and difficult to detect, but researchers estimate a high probability that the snake community is now smaller and more homogeneous, with lower occurrence rates and poorer body conditions for many species. See page 814.
Photo: Bence Mate/Minden Pictures