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  1. JANJ

    Ladder-backed–Nuttall's hybrid? CA, USA

    I know little about these two species and less regarding hybrids. It seems, however, that there´s a certain degree of variation (as in all birds). In Sibley the black face markings in Nuttall´s - shows the white streak bordered by black - narrower than in Ladder-backed and the upper black...
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