"To Ooaman ; This is evolution as observed across a span of a couple of generations , which is the unit that evolutionary change occurs . Obviously a generation of a small bird is n't as long as it is for us , for example ."
"Oh , okay , I understand it now . I still think it sounds quick but then again , I 'm not a member of the bird family ."
"This is evolution as observed across a span of a couple of generations ,"
"I understand it now . I still think it sounds quick but then again"