Juergen Freund / Water redirected through gutters at the Daintree Drought Experiment, where rainforest plants are grown under cover to see how they respond to drought. Daintree Rainforest Observatory, northern Queensl...

Juergen Freund / Water redirected through gutters at the Daintree Drought Experiment, where rainforest plants are grown under cover to see how they respond to drought. Daintree Rainforest Observatory, northern Queensl...

Kim Taylor / Wren (Troglodytes troglodytes) fledgling perched on gutter. Surrey, England, June.

Robin Chittenden / House sparrow (Passer domesticus) perched on gutter, Norfolk, UK, February.

Charlie Hamilton-James / Brown rat (Rattus norvegicus) poking head out of a drain on city street at night, just off Broadway, New York City, USA. May.

Charlie Hamilton-James / Brown rats in a catch basin / drain under city street at night, West Broadway, New York City, USA. March.

Terry Whittaker / Plastic litter including bottles in gutter. Mandroseza, Antananarivo, Madagascar. 2019.