Sources:
http://www.ehow.com/about_5417886_life-cycle-hummingbird.html
http://www.worldofhummingbirds.com/habitat.php
http://animals.pawnation.com/hummingbird-adaptations-6227.html
http://birding.about.com/od/birdprofiles/a/whatishummingbird.htm
http://www.onekind.org/be_inspired/animals_a_z/hummingbird/
http://birding.about.com/od/birdprofiles/a/hummingbirdfacts.htm
http://www.ehow.com/about_5417886_life-cycle-hummingbird.html
http://www.worldofhummingbirds.com/habitat.php
http://animals.pawnation.com/hummingbird-adaptations-6227.html
http://birding.about.com/od/birdprofiles/a/whatishummingbird.htm
http://www.onekind.org/be_inspired/animals_a_z/hummingbird/
http://birding.about.com/od/birdprofiles/a/hummingbirdfacts.htm