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: A rare phenomenon in birds, certain genera like Pitohui and Ifrita in New Guinea have evolved neurotoxic alkaloids in their feathers and skin as a defense mechanism. Modern Identification and Research

The classification of birds is a complex, evolving field that organizes the world's 11,000+ avian species into a structured hierarchy. A (plural: genera) serves as a critical middle ground in this system, grouping together species that share a recent common ancestor and similar physical or behavioral traits. The Role of Genus in Taxonomy bird genus

The Tropic Bird (Genus Phaethon) of Ascension Island - ResearchGate : A rare phenomenon in birds, certain genera

: Comprises medium to large pigeons, such as the common Rock Pigeon ( Columba livia ). : A rare phenomenon in birds