The mountain-finches may be regarded as pointing first to the rock-sparrows (Petronia) and then to the true sparrows (Passer); while the grosbeaks pass into many varied forms and throw out a very well marked form - the bullfinches (Pyrrhula). [Please select]
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It is well known that hemp-seed causes bullfinches and certain other birds to become black. [Please select]
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139, speaks of bullfinches making nests, but rarely producing young. [Please select]
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139 speaks of bullfinches making nests, but rarely producing young. [Please select]
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When not occupied in disbudding fruit-trees, Bullfinches are most frequently observed in tall and thick hedges, either in small flocks as described above, or in pairs. [Please select]
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