Birds of Prey and DDT
Malaria
• National Geographic Malaria Slide Show
• DDT ads
http://toxipedia.org/display/toxipedia/DDT
DDT
http://www.learner.org/courses/envsci/unit/text.php?unit=7&secNum=5
Effects of DDT
• Humans: carcinogenic, endocrine disruption, birth defects
• Birds: eggshell thinning• Toxic to many aquatic organisms
• DDT was outlawed for use in the United States in 1972.
Peregrine Falcons
Peregrine Falcon Breeding Habitat
http://www.acopiancenter.am/page.asp?tid=155&name=Peregrine-Falcon-and-Pesticides
Peregrine Chicks
• 1 in 4 peregrine chicks survive the first year due to difficulty feeding and falls from cliffs
• www.peregrinefund.org
• http://www.nps.gov/neri/parknews/peregrine_monitoring_2008.htm
• http://blogs.peregrinefund.org/pages/article.php?eid=373
• http://childrenandnature.ning.com/profiles/blogs/falcon-watch
Peregrines today
• Currently 120 active nests in Colorado alone• Lowest count of Peregrines was 324 nesting
pairs• In 1999 there were 5000 nesting pairs, species
was removed from the endangered list• In 2004 there were enough pairs to be a
secured species• Today Peregrines are listed as “least concern”