Fergus Gill / 2020VISION / Wood warbler (Phylloscopus sibilatrix) perched in branch, searching for food in an oak tree, Atlantic Oakwoods of Sunart, Scotland, May. Did you know? The scientific name for this species ‘sibilatrix'...

Tim Laman / Portrait of a Regent Whistler (Pachycephala schlegelii) male captured at 1650 m in the Foja Mountains. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Assessment...

Chien Lee / Bornean Whistler (Pachycephala hypoxantha) endemic to mountain forests of Borneo, Kinabalu National Park, Borneo, Malaysia

Sue Flood / Waterfall in narrow gorge, on the Rocky Mountaineer tourist train route, near Whistler, British Columbia, Canada, June 2007

Matthias Breiter / Spearhead Range seen from Whistler Mountain in winter, Whistler, British Columbia, Canada

Matthias Breiter / Spearhead Range seen from Whistler Mountain in winter, Whistler, British Columbia, Canada

Tim Laman / Regent whistler (Pachycephala schlegelii) male perched in a tree, Southwestern slopes of Mt. Hage, Enga Province, Paupa New Guinea

Tim Edwards / Jasper Tram way cable car up Whistler Mountain, Jasper National Park, Alberta, Canada

Gerry Ellis / Dwarf Whistler (Pachycare flavogrisea) male, Mt Bosavi, Papua New Guinea

Martin Willis / Olive Whistler (Pachycephala olivacea), Bruny Island, Tasmania, Australia