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Sierro, A., & Erhardt, A. (2019). Light pollution hampers recolonization of revitalised European Nightjar habitats in the Valais (Swiss Alps). Journal of Ornithology, 160(3), 749–761.
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Smolka, J., Baird, E., el Jundi, B., Reber, T., Byrne, M. J., & Dacke, M. (2016). Night sky orientation with diurnal and nocturnal eyes: dim-light adaptations are critical when the moon is out of sight. Animal Behaviour, 111, 127–146.
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