BIOL10004 Lecture Notes - Lecture 33: Sensory System, Motor System, Sandwich Tern

• School: University of Melbourne
• Department: Biology
• Course: BIOL10004
• Professor: Dawn Gleeson

Document Summary

Curious behaviour in the queensland gulf country foraging strategy: When toad is frightened it releases a really poisonous substance. Parental behaviour of black-headed gulls parental behaviour: * gulls nest on the ground, so eggs and chicks are vulnerable to ground predators. * solutions: eggs and chicks are cryptic (difficult to see) would suggest that there is high predation pressure that allows natural selection to select cryptic egg shells. * shortly after chicks hatch, the broken empty egg shells are removed. This behaviour would be expected to be very common in all bird species because all birds lay eggs. E. g. the sa(cid:374)d(cid:449)i(cid:272)h ter(cid:374) a(cid:374)d kitti(cid:449)ake do(cid:374)"t do this (cid:894)they (cid:374)est o(cid:374) (cid:272)liff a(cid:374)d do(cid:374)"t ha(cid:448)e (cid:272)rypti(cid:272) eggs(cid:895) * perhaps the chick will injure themselves on the sharp edges of the shells. * perhaps the decaying membranes and fluids that remain in the eggshells are a breeding ground for disease-causing bacteria.