A red-breasted nuthatch (Sitta canadensis) catches an insect at the entrance to its nest in Ravenna Park, Seattle, Washington. Red-breasted nuthatches line the entrance to their nest with sticky pitch, which may be intended to trap insects and serve as an obstacle for predators. The nuthatches avoid the pitch by flying straight through the hole. Red-breasted nuthatches, which feed mainly on insects and spiders during the summer nesting months, found several insects trapped in the pitch surrounding the hole to its nest.
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