Gangoso, L., López-López, P., Grande, J.M., Mellone, U., Limiñana, R., Urios, V., Ferrer, M. 2013. Ecological Specialization to Fluctuating Resources Prevents Long-Distance Migratory Raptors from Becoming Sedentary on Islands. PLoS ONE 8: 4. e61615.
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Year: 2013