— when we here the term “migratory,” we tend to think of the seasonal migrations we see on tv like the wildebeests crossing the serengeti ecosystem between tanzania and kenya or monarch butterflies making their ways north from their winter breeding grounds in mexico. but “migratory” under this treaty, now ratified by 130 countries, means much more. read : towards a global endangered species act more : convention on the conservation of migratory species of wild animals