Yellow-throated Euphonia v. Yellow-crowned

Birders visiting our area of Costa Rica for the first time who consult the bird-guide texts in advance to sort out which Euphonia species they are likely to find will still tend to discount the Yellow-throated Euphonia (Euphonia hirundinacea) on the basis of the distribution maps.

Los pajareros que visitan por primera vez nuestra región de Costa Rica y que consultan los textos de las guías de aves  para determinar cuáles son las especies más susceptibles de aparecer continuarán a descartar la Eufonia Gorgiamarilla (Euphonia hirundinacea), basándose en los mapas de distribución.

Euphonia, Yellow-throated (female - nest, Santa Rosa, garden) (1)

Female Yellow-throated Euphonia on nest in Santa Rosa de Turrialba; Hembra de Eufonia Gorgiamarilla, con nido en Santa Rosa de Turrialba

Euphonia, Yellow throated (male garden Santa Rosa)

Male Yellow-throated Euphonia in Santa Rosa de Turrialba; Eufonia Gorgiamarilla, macho, en Santa Rosa de Turrialba

However, the comparison between that species and the Yellow-crowned Euphonia (Euphonia luteicapilla) is the very first one that they should be considering, because these are undoubtedly the two commonest euphonia species here. The only other yellow-and-dark-blue species that can confuse here is the White-vented Euphonia (Euphonia minuta), which is much less frequently encountered.

Sin embargo, una comparación entre aquella especie y la Eufonia Coroniamarilla (Euphonia luteicapilla) es la primera comparación básica que deberían considerar, porque éstas son sin duda las dos eufonias más comunes que aquí se encuentran. Sólo queda una eufonia más de colores azul oscuro-amarillo que los podría confundir, la Eufonia Menuda (Euphonia minuta), la cual se ve con mucho menos frecuencia.

Yellow-crowned euphonia (1)

Male Yellow-crowned Euphonia, courtesy of Karel Straatman; Eufonia Coroniamarilla, macho, con permiso de Karel Straatman

It is recommended to contrast the males of these species rather than the all-greenish-yellow females, whose most distinctive difference is the white on the belly (not always easy to see) of the Yellow-throated. All photos of Yellow-throated Euphonias by kind courtesy of John Beer.

Se recomienda contrastar los machos de estas especies, puesto que la diferencia principal que distingue las hembras verdiamarillentas es el vientre blanco de la Eufonia Gorgiamarilla, el cual no siempre es fácil de ver. Todas las imágenes de Eufonia Gorgiamarilla por cortesía de John Beer.

Euphonia, Yellow- throated (Female, Santa Rosa, garden)   (2)

Female Yellow-throated Euphonia with nesting material in Santa Rosa de Turrialba; Hembra de Eufonia Gorgiamarilla con material de nidificación en el pico, Santa Rosa de Turrialba

 

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3 thoughts on “Yellow-throated Euphonia v. Yellow-crowned

  1. Good morning Paul, always reading your blog with interest. But the pictures in the last one don’t come up. What do I have to do to let it happen? Have a nice weekend. Wiet

    Like

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