birds of prey and ddt. malaria national geographic malaria slide show

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”