How does owl coloration vary between northern forests deserts and tropical habitats?

Owl coloration is highly adaptive, with patterns and base colors varying significantly based on the specific environment to provide concealing coloration. This geographic variation is particularly evident in widespread species such as the scops owl and the screech owl, where divergent races have developed distinct appearances.1

The variation across different habitats is characterized as follows:

• Northern regions: Owls typically exhibit a faint pattern set against a whitish background.1
• Humid temperate forests: These birds display a bold pattern on a sooty background.1
• Desert areas: Coloration consists of a medium-to-fine pattern on a pale gray background.1
• Arid tropics: These owls feature a fine pattern on a rufous (reddish) background.1
• Humid tropics: The plumage is marked by a coarse pattern on a fulvous (yellowish-brown) background.1

This cryptic patterning, which often includes streaks, bars, or spots, helps the birds blend into their surroundings, such as tree bark, to remain invisible to predators and prey.1