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NEST BOXES & REFUGEES FOR WILD GARDEN ANIMALS
GULLS SIMPLIFIED: A COMPARATIVE APPROACH TO IDENTIFICATION
Dunne P.
Guía específica sobre las gaviotas norteamericanas, que proporciona comparaciones entre aquellos casos donde el tamaño, estructura, y características básicas del plumaje permiten aconsejar cómo separar las especies que más se parecen, más que en los detalles muy específicos que suelen conocer solamente los muy expertos.
Con centenares de fotos, ilustra los diferentes plumajes y sus variaciones por edades, ofreciendo al lector referencias visuales fiables. Los pies de foto son muy completos, sobre todo en los numerosos montajes.
Con centenares de fotos, ilustra los diferentes plumajes y sus variaciones por edades, ofreciendo al lector referencias visuales fiables. Los pies de foto son muy completos, sobre todo en los numerosos montajes.
