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Birds of Prey and DDT. Malaria National Geographic Malaria Slide Show.

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Presentation on theme: "Birds of Prey and DDT. Malaria National Geographic Malaria Slide Show."— Presentation transcript:

1 Birds of Prey and DDT

2 Malaria National Geographic Malaria Slide Show

3 DDT ads

4 DDT xt.php?unit=7&secNum=5

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.

6 Peregrine Falcons

7 Peregrine Falcon Breeding Habitat /page.asp?tid=155&name=Per egrine-Falcon-and-Pesticides

8 Peregrine Chicks 1 in 4 peregrine chicks survive the first year due to difficulty feeding and falls from cliffs

9

10 _monitoring_2008.htm

11

12 373

13 ogs/falcon-watch ogs/falcon-watch

14 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”


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