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Şekercioğlu, Çağan H., Chase D. Mendenhall, Federico Oviedo-Brenes, Joshua J. Horns, Paul R. Ehrlich, ja Gretchen C. Daily. "Long-term Declines in Bird Populations in Tropical Agricultural Countryside." Proc Natl Acad Sci U S A 2019.

Şekercioğlu, Çağan H., et al. "Long-term Declines in Bird Populations in Tropical Agricultural Countryside." Proc Natl Acad Sci U S A 2019.