Why are whales, not chickens, in danger of extinction. ?

(It looks like a whale, doesn't it ?)

First of all, it's obvious that the supply of chicken is much more higher than the supply of whales. They are feeding chicken to take meat but no one feeding the whales in order to take meat from them. Further more, a whale took much more time to have a next generation, but a chicken just take a week..... Let's trying to explain like an economist ( ... ) . The supply of whales is inelastic. May be some one takes money to create a big pool to have some whales for taking meat. It will make the price of whale higher because of the increase in productivity cost, but it just increase a little amount of whales in the market. So anyways, the amount of whales also less than chickens very much. And the whales, not chicken, in danger of extinction