High mountain bird communities tend to be poorly studied due to their relative inaccessibility, but are vulnerable to declines and extirpations driven by global warming and habitat change, even in ...
Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...
Northern bobwhite populations are declining in North Carolina's Triangle region, according to North Carolina's Mini Breeding Bird Survey. A 2019 study found that North America has lost nearly 3 ...
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