Researchers used discarded eggs from invasive house sparrows to test for heavy metal contaminants. A citizen-science project called "Sparrow Swap" engaged bluebird enthusiasts to collect over 2,000 ...
When birders find eggs laid by invasive bird species, they typically throw them and the encroaching nests out. But researchers at the N.C. State College of Natural Resources and the N.C. Museum of ...
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