The effect of secondary poison is synonymous with birds of prey. Individuals across raptor species are affected daily by their targeted prey, resulting in the die off of local populations, if not whole species.
There is however a recovery story of a raptor whose food supply is no longer being poisoned – the fish eating osprey.
After World War II, various pesticides, including the notorious DDT was applied liberally to vast tracks of cultivated and wilderness lands essentially poisoning entire food chains. The result had a cascade effect on thousands of species, including the osprey, whose egg shells thinned to such a degree that they were no longer able to sustain the weight of parent incubation causing the population to plummet.
But all was not lost, this particular species played a pivotal role in the historical pesticide ban in the 1970s allowing its own kind and the domino effect for other brink species the room to recover.
Artificial nesting-poles and guardian farmers encouraged ospreys to breed to the point where now hundreds of pairs can been seen in areas where previously none remained, and a global resurgence can now be celebrated.
This success story is testament that should key threats to species and conservation at large be addressed – such as poison application – nature can indeed rebound.
To read their full recovery journey, follow this link: https://theconversation.com/ospreys-recovery-from-pollution-and-shooting-is-a-global-conservation-success-story-111907