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t></div><d On 29/04/2013 6:00 PM, Andrew Horn wrote: > > White-breasted Nuthatches do indeed sweep their nest holes with a > beetle. As far as I know, no one really knows why. It might be to > deter other birds, predators, or parasites (lots of beetles contain > noxious chemicals). Last year, we had a pair of WB Nuthatches nest in a box just outside the kitchen window. They spent about three days "sweeping." The female did most of this domestic work, but the male took over near the end while she spent more time inside. At times they clearly had something in their bills, but mostly it looked to me as if they were just cleaning/scraping. Doug Linzey Arlington, NS
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