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Miami University: All About Bird Nests
If you think that all bird nests are alike read the about the study that this professor has conducted. You'll realize that there is so much more to bird nests than you thought.
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Science Demo Guide: Ngss 1 Ls1 2 Stem Activity
In this activity, students will build a bird's nest out of things that an actual bird might use to help their young survive. Student planning pages are available for download.