The ZNS slides can be sent easily to reference laboratories for later molecular analysis that can be useful not only to improve the diagnosis, but also for the application of other molecular techniques.
We document a unusual variation in the extent of preformative molt across 20 formative-plumaged Blueand-yellow Tanager (Pipraeidea bonariensis darwinii Bonaparte, 1838) museum specimens from Peru. Our finding represents the first evidence of eccentric replacement of primaries and primary coverts during the preformative molt for this species.
La capacidad de cobertura del Estado colombiano, en materia de políticas públicas, ha sido abundante, pero no acertada, a lo largo del siglo XX. Ejemplo de ello es la incapacidad del sistema educativo, tanto en la educación básica y media como en la educación superior, para absorber la demanda educativa del ámbito nacional y, particularmente, de los sectores rurales alejados de los principales centros urbanos del país.
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