BIOL 1902 -A th
Monday September 26 2011
Mobbing = Pre-emptive defence?
White – tailed Deer YARD in winter
Carpenter Ants guarding aphids
Bodyguards in Nature
Cottontail Rabbit; White tailed deer; Why do they put up their white tails when running away?
To say I've seen you (the predator). Might advertize awareness.
Snakes have no hearing; pressure sensors
Vigilance = being alert and scanning for dangers
Adaptations for scanning:Auditory, Olfactory, Visual
Large external pinnae (ears) capture sound; ears swivel to scan all directions.
Why do beavers have small ears? Not good for the water
Tiger Moths also have “ears”; can hear the bats; membranes.
Mantid also have membranes to hear s