In some cases, they are three generations removed from the previous visitors. Try planting a butterfly garden. And be sure to try your hand at building a butterfly house . It has been discovered that even with abundant natural nectar sources, butterflies, especially Monarchs, are crazy about watermelon . Sadly, the world population of butterflies is declining.
Butterflies are very vulnerable to pesticides.
Urban growth is also destroying many butterflies natural habitat and breeding grounds. Other species may becoming rare due to butterfly trapping and trade to collectors, craftsmen, and others. In the United States, there are more than 20 moths and butterflies that are classified as endangered. All over the world there are numerous organizations working diligently. Check out this site in Australia as well as this one in England .