I’ve already read that deerlakejens… more than once. Let me quote directly from it (bolding and underlining are mine)…
Ya’ know, studies have shown that deer reproduction changes with habitat and competition. When deer populations are high and/or competition for resources is high the doe’s will drop mostly single offspring with higher percentages of males. When deer populations are low and/or competition for resources is low the doe’s will drop a higher percentage of twins and higher percentages of females. This is nature’s way of preventing over-population.
Maybe, just maybe, as humans have taken more and more of predatory bird habitat and resources Mother Nature has stepped in to do her job. Maybe, just maybe, as competition for resources has increased these birds aren’t getting the proper diet, or their diet has changed in subtle ways because of human intrusion. Maybe, just maybe, this is nothing more than nature’s way of things… … … Naw, you’re probably right… it just has to be the fault of big, bad chemical corporations… and the only thing that can save us from ourselves is Big Brother.
That is the only thing said about thin egg shells in that document, and… sorry, but that’s a far cry from “fact”. It’s almost as though they went out of their way to say as little as possible about the issue without promoting or debunking either side of the argument. And the only reference to that section of the document is the “World Health Organization”… Give me a break… no wonder they didn’t elaborate further!There has been much concern over chronic exposure of bird species to DDT and effects on reproduction, especially eggshell thinning and embryo deaths . The mechanisms of eggshell thinning are not fully understood. It is thought that this may occur from the major metabolite, DDE, and that predator species of birds are the most sensitive to these effects… The implications of these for long-term survival and reproduction of wild bird species is unclear.
Ya’ know, studies have shown that deer reproduction changes with habitat and competition. When deer populations are high and/or competition for resources is high the doe’s will drop mostly single offspring with higher percentages of males. When deer populations are low and/or competition for resources is low the doe’s will drop a higher percentage of twins and higher percentages of females. This is nature’s way of preventing over-population.
Maybe, just maybe, as humans have taken more and more of predatory bird habitat and resources Mother Nature has stepped in to do her job. Maybe, just maybe, as competition for resources has increased these birds aren’t getting the proper diet, or their diet has changed in subtle ways because of human intrusion. Maybe, just maybe, this is nothing more than nature’s way of things… … … Naw, you’re probably right… it just has to be the fault of big, bad chemical corporations… and the only thing that can save us from ourselves is Big Brother.