100+ Grasshopper sparrow PowerPoint (PPT) Presentations, Grasshopper sparrow PPTs

Grasshopper sparrow - PowerPoint PPT Presentation

Endangered Species of Bird in Connecticut

Endangered Species of Bird in Connecticut . Sharp-shinned Hawk numbers declined during the DDT pesticide years (mid-1940s to 1972), but rebounded after DDT was banned. Sharp-shinned hawk populations declined in the 1970s due to eggshell thinning caused by pesticide contamination in their prey. .

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Grasshopper sparrow - PowerPoint PPT Presentation

Endangered Species of Bird in Connecticut