I got personally involved in 1979 when the question came up about, where 0:53:32 - 2153the heck do the monarch butterflies go when they leave in the fall? In 1974, science found that they go down in the volcanic belt west of Mexico City. And they wouldn't tell anybody where, but Paul Spitzer, who is a ornithologist, a-one of the people that Roger Tory Peterson helped a lot. He wanted to know if they go down there in such masses as they're said to do. All of a sudden now, here's a food supply. A big, huge, inexhaustible food supply. What takes advantage of that? Something in nature will. So what? Well, we know who, everybody said, it won't be birds that eat them, because we have big blue 0:54:38 - 2153jay experiments up in Cornell. And a blue jay eats a monarch butterfly and throws up because the monarch butterfly eats milkweed plant and there are cardiac glycosides in that, and it-it infects their body enough so that if you eat it, you're going to throw up. So rule out boards-birds. Well what else would it be? We went down there to find out in 1979 and had to find the place on our own. We got maps out and looked at the description of the areas and so forth. We found them. And we set out on a metric system grid, posts on a random area and smeared pie-peanut butter on all of them. If anything that's in the way of rodents around is sure going to eat the peanut butter. Well we were 0:55:46 - 2153there for about three weeks and never saw a tooth mark in anything. It isn't' that. There were millions and millions of butterflies and a lot of them dead on the ground, one of which had a number on a tag on the wing. I picked it up and sent it back to [Frederick] Urquhart in Toronto and he wrote back and told me that butterfly was tagged near Hawk Mountain in Pennsylvania. And it had made the trip all the way down. Others were there by the 0:56:23 - 2153millions and they-they're still there, still viable. We-we studied them for about three weeks and found out that they were going to, being all together, start mating in about February. And this goes on until it's safe to head north again where they can get into bad weather. The butterflies then eat milkweed plant. They use them to lay-lay eggs on. They eat whatever's-pollinate all sorts of things, but they lay eggs only on the milkweed plants as they go north. And some of them make it back up there, not all the way, but along the way they planted a whole lot of eggs. They, in turn, develop and go 0:57:23 - 2153north, build up that big population again. And for three, four, five, I don't know how many differing, I suppose, generations, they don't think about migration at all The fifth generation on, what does it know about what the experience is, where is the place that they should go, so forth. I don't know. I've never had anybody explain it. But the fifth generation, if-if that's the one, comes out and starts exercising. Never a thought about mating. This group is going to go, mating comes on the way back. It's some kind of a system. And we found it as remarkable as it could be that that whole thing was taking 0:58:14 - 2153place under our noses. The Indians have known about them for years. But now industry's come down there. Logging, cutting down the trees, and the big Oya [fir] mills are where the butterflies are. And you have to build terrible roads through the places to try to get at their ten thousand foot altitude and it's rough country. And they're going commercial. And so what's happening? We found the answer to our question. Birds do take advantage of all that easy living. They come in early in the morning. The birds eyes 0:58:59 - 2153are very sensitive to motion, any motion, bing, leave, don't question, don't think about it, beat it. Something's wrong. That ought to be the way they go. But these butterflies are dormant. Their wings are locked back, absolutely motionless. The degrees are down around thirty-five, thirty-seven degrees. Thirty-two they can handle, thirty-one they can't. They have to be high, near water, so forth. We studied them for quite a while. And finally saw some birds come in early in the morning before their wings started moving, no motion, everything is absolutely still, so the bird is not alarmed and it'll come 0:59:46 - 2153in, here's these butterflies. They hop along a branch, bite one on the wing. Get another, bite it on the wing, bite another. Oh, this one's all right. Peel off the abdomen, let the rest float down. Finally we located where they were going, when they were doing that, up above, by this spiraling down of the wings. And we found about seven species and subspecies of birds that were coming in there early in the morning, sampling, and not being disturbed by any motion, nothing else happening. Just-then as the butterflies start to opening up their wings and moving, leave, too much motion. So birds do do it. Why 1:00:40 - 2153do birds flo-throw up in the states? Because there are a hundred and five different species of cardiac glycosides plants in the milkweed. Some are more, some are less. Sample, find one that's less that you think you can handle. Leave the others alone. We found what we wanted, but we also discovered logging trucks starting to come around on rickety, terrible roads, shifting loads, dangerous. But they were starting to clear out lumber. And just recently there's-you read about outrage, and that's what outrages me, 1:01:36 - 2153is people realizing that this is probably the most remarkable migration in the world of all the migraters there are. I don't know of any that match that poor little butterfly flying two, three thousand miles. I found one that went at least two thousand, probably more. Why don't we learn something from that? But no, we got to make money. Sustainability, not good. Prognosis poor. Wake up. [End of Reel #2153]