المؤلفون: BRAMBILLA, MATTIA, RESANO-MAYOR, JAIME, ARLETTAZ, RAPHAËL, BETTEGA, CHIARA, BINGGELI, ANAÏS, BOGLIANI, GIUSEPPE, BRAUNISCH, VERONIKA, CELADA, CLAUDIO, CHAMBERLAIN, DAN, CHIFFARD CARRICABURU, JULES, DELGADO, MARIA DEL MAR, FONTANILLES, PHILIPPE, KMECL, PRIMOŽ, KORNER, FRÄNZI, LINDNER, ROBERT, PEDRINI, PAOLO, PÖHACKER, JAKOB, RUBINIČ, BORUT, SCHANO, CHRISTIAN, SCRIDEL, DAVIDE, STRINELLA, ELISEO, TEUFELBAUER, NORBERT, DE GABRIEL HERNANDO, MIGUEL

المصدر: Bird Conservation International ; volume 30, issue 4, page 522-532 ; ISSN 0959-2709 1474-0001

الاتاحة: http://dx.doi.org/10.1017/s0959270920000027
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0959270920000027