BIOL 1902 th
Wednesday September 14 2011
Camouflage, background matching & mimicry
− Plants andAnimals names that are stressed in the lectures; we should know. The one's in
brackets, you do not need to know them.
− American Bittern; vertical line background
− Ground nesting birds have matching patterns of earth tones, dapple patterns
− Background matching can include bark mimicry
− Background matching can be done seasonally
− Snowshoe hare aka Varying hare (seasonally)
− Must remain still for camouflage to work
− Many songbirds have a stripe above the eye and a line through the eye. Why? When in a nest
only their head is visible; camouflage
− Disruptive pattern; different lines visually break up the shape of the animal.
− Killdeer bird
- breast bands: Can they be a disruptive pattern?Absolutely.
− Canada goose
- what about a chin strap? Yes, white chin strap breaks up the shape within the dark waters
- Necklace? Yes.
− Leopard frog
- dark bands when parts (legs) are folded together – coincident disruptive pattern.
− Moths down on the ground puddling similar to milk snake
− Form of camouflage: shape + colour
- an angle shaped butterfly; dead leaf mimic
− Masquerade – shape camouflage
− Twig m