The complex breeding system of Pinyon jays, involving helpers at their nest, the bird's dependence on the seed of the Pinyon Pine and their highly developed food hoarding behaviour, provides the backdrop for a species monograph on this North American bird.
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The complex breeding system of Pinyon jays, involving helpers at their nest, the bird's dependence on the seed of the Pinyon Pine and their highly developed food hoarding behaviour, provides the backdrop for a species monograph on this North American bird.
Read Less
