Jeff Foott / Maple (Acer sp) leaves and needles in autumn, Acadia National Park, Maine

Jack Dykinga / Western sword fern (Polystichum munitum) and Big leaf maple (Acer macrophyllum) trees that are covered with moss, Hoh Temperate Rainforest, Olympic National Park, Washington, USA. June 2017.

Andres M. Dominguez / Great grey shrike (Lanius meridionalis) perched on a branch of Montpellier maple (Acer monspessulanum). Sierra de Grazalema Natural Park. southern Spain. December.

Floris van Breugel / Late fall colors linger among the mossy trees (Acer macrophyllum) in the Hoh Rainforest in Olympic National Park. Washington, USA. November 2012

Floris van Breugel / Japanese maple (Acer palmatum) leaves floating in a small pond in late autumn in Seattle's Washington Park Arboretum. Washington USA

LYNN M. STONE / Mixed-breed piglet in straw, Maple Park, Illinois, USA

LYNN M. STONE / Mixed-breed piglet in wooden box with sunflowers, Maple Park, Illinois, USA

LYNN M. STONE / Sleeping mixed-breed piglet in straw, Maple Park, Illinois, USA

Rolf Nussbaumer / Jumping Spider (Salticidae) perched on Bigtooth Maple leaf (Acer grandidentatum). Lost Maples State Park, Hill Country, Central Texas, USA, November.

Laurie Campbell / Norway Maple (Acer platanoides) fallen leaves in autumn, Queen Elizabeth Forest Park, Stirlingshire, Scotland, October

Jack Dykinga / Blue Hen Falls with Sugar Maples (Acer saccharum) and American Beech trees (Fagus grandifolia), Cuyahoga Valley National Park, Ohio

Tim Fitzharris / Little Pigeon River cascading among rocks and colorful Maple leaves, Great Smoky Mountains National Park, Tennessee