how does pesticides affect bird eggs?

I am doing a huge english speech, and my speech is due tomorrow! Please someone tell me how pesticides affect bird eggs. It is the last part I need to talk about in my speech, and then I’m finished!

http://www.google.com/search?hl=en&q=pesticides+affect+on+birds&aq=f&oq=

baby bird eggs(robin)


Kikkerland Owl Kitchen Timers, Assorted Colors


Kikkerland Owl Kitchen Timers, Assorted Colors


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Green Gourmet hard-anodized pans feature an aluminum alloy core and exclusive nonstick surface that’s ceramic- rather than petroleum-based, so it helps to conserve existing oil reserves. Handles are made from 70% recycled stainless-steel and Green Gourmet conducts heat so well, it’s more energy-efficient too. Even the manufacturing process uses less energy than others. No conscientious cook should…

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Ladybug Kitchen Timer.
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