This reads like a not-very-well-done parody of how the elite media reflect and magnify cultural obsessions with weight through pseudo-scientific musings about the supposed "obesity" epidemic.(Shorter version: Because individual birds and rats are more or less prone to being startled by their environment, and hormones...
pseudo-science
Irrational Robot has a great post on the "intelligent design" movement. Upside, they haven't made as much progress as they've claimed. Downside, they're trying very hard. The geeky negative angle:.