Dr Donald Brightsmith, the manager of the Tambopata Macaw Project gives a lecture on the use of the clay lick by the various parrot species. He also shows how the researchers study the growth of the baby parrots.
If you would like to see this amazing place for yourself, start with my article here and also learn how the use of frequent flier miles can get you all the way to Puerto Maldonado so all you have to pay is the taxes and the cost of the Tambopata Research Centre package!