BIOL 1902 Lecture Notes - Lecture 3: White-Tailed Deer, Snowshoe Hare, Depth Perception

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Yarding: white-tail deer yard (in winter) grouping together mainly for food, but for safety too. Bodyguards: some animals enlist the help of more powerful animals. (carpenter ants guard. Aphids(cid:895) a(cid:374)ts (cid:271)e(cid:374)efits too fro(cid:373) the e(cid:454)tra sap fro(cid:373) the aphids" poop. (cid:894) ymbiotic(cid:895) (cid:862)white flag(cid:863) Raised white flag is ad(cid:448)ertisi(cid:374)g a(cid:449)are(cid:374)ess to predator that the(cid:455)"(cid:448)e (cid:271)ee(cid:374) see(cid:374) a(cid:374)d to gi(cid:448)e up. Vigilance in animals being on the alert for danger, how the scan their environment. Detection of danger involved vigilance, which often involves scanning the environment for signs of danger. Snakes: have no external ears, but sense vibrations from the ground. Fish: have the lateral lines on their side and can sense pressure. 3 ways animals can detect danger: nose/smell- olfactory. Flehmen: posture, curls back lips to expose the jacbonson"s organ improve their sense of smell (horse naying) Hide in the daytime, more active at night. Moose/deer: large external pinnae (external ears) capture and magnify sound.

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