May 17 is Endangered Species Day -- great way to observe that (Stop Extinction dot-org)

from "Ten Easy Things you can do at home to protect endangered species" :

Visit a national wildlife refuge, park or other open spaceThese protected lands provide habitat to many native wildlife, birds, fish and plants. Scientists tell us the best way to protect endangered species is to protect the places where they live.  Get involved by volunteering at your local nature center or wildlife refuge.
Go wildlife or bird watching in nearby parks. Wildlife related recreation creates millions of jobs and supports local businesses.
To find a wildlife refuge near you, visit www.fws.gov/refuges/
To find a park near you, visit www.nps.gov
To find a zoo near you, visit www.aza.org
Make your home wildlife friendlySecure garbage in shelters or cans with locking lids, feed pets indoors and lock pet doors at night to avoid attracting wild animals into your home.
Reduce your use of water in your home and garden so that animals that live in or near water can have a better chance of survival.
Disinfect bird baths often to avoid disease transmission.
Place decals on windows to deter bird collisions. Millions of birds die every year because of collisions with windows. You can help reduce the number of collisions simply by placing decals on the windows in your home and office.
http://www.stopextinction.org/10athome.html