זג צהוב-מקור
הערות שוליים

↑  זג צהוב-מקור באתר הרשימה האדומה של IUCN
↑  קרלוס לינאוס, (1766). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio duodecima (בלטינית). Holmiae. (Laurentii Salvii). עמוד 158.
↑  Tunstall, M. (1771). Ornithologia Britannica: seu Avium omnium Britannicarum tam terrestrium, quam aquaticarum catalogus, sermone Latino, Anglico et Gallico redditus (בלטינית). London, J. Dixwell. עמוד 2.
1 2 3 4 5 6 7 8 9 10 11  Madge, S.; Burn, Hilary (1994). Crows and jays: a guide to the crows, jays and magpies of the world. A & C Black. עמ' 132–133. מסת"ב 0-7136-3999-7.
1 2 3  Goodwin, Derek; Gillmor, Robert (1976). Crows of the world. London: British Museum (Natural History). עמ' 151–158. מסת"ב 0-565-00771-8.
↑  Ericson, Per G. P.; Jansén, Anna-Lee; Johansson, Ulf S.; Ekman, Jan (2005). "Inter-generic relationships of the crows, jays, magpies and allied groups (Aves: Corvidae) based on nucleotide sequence data" (PDF). Journal of Avian Biology 36(3): 222–234. מזהה עצם דיגיטלי: 10.1111/j.0908-8857.2001.03409.x.
↑  "Chough Pyrrhocorax pyrrhocorax (Linnaeus, 1758)". BTOWeb BirdFacts. British Trust for Ornithology.
↑  Woodhouse, Sidney Chawner (1982). The Englishman's pocket Latin-English and English-Latin dictionary. Taylor & Francis. p. 75. מסת"ב 0-7100-9267-9.
↑  Cocker, Mark; Mabey, Richard (2005). Birds Britannica. London: Chatto & Windus. pp. 406–408. מסת"ב 0-7011-6907-9.
↑  Dickinson, E C; Dekker, R. W. R. J.; Eck, S.; Somadikarta S. (2004). "Systematic notes on Asian birds. 45. Types of the Corvidae" (PDF). Leiden Zoologische verhandelingen 350: 121.
1 2 3  Snow, David; Perrins, Christopher M., eds. (1998). The Birds of the Western Palearctic concise edition (2 volumes). Oxford: Oxford University Press. עמודים 1464–1466. מסת"ב 0-19-854099-X.
1 2  Laiolo, Paola; Rolando, Antonio (2000). "Ecogeographic correlates of morphometric variation in the Red-billed ChoughPyrrhocorax pyrrhocorax and the Alpine Chough Pyrrhocorax graculus". Ibis 43 (3): 602–616. מזהה עצם דיגיטלי: 10.1111/j.1474-919X.2001.tb04888.x.
↑  זג צהוב-מקור, באתר ארקייב (ארכיון)
↑  Laiolo, Paola; Rolando, Antonio; Delestrade, Anne; de Sanctis, Augusto (2001). "Geographical variation in the calls of the choughs". The Condor 103 (2): 287–297. מזהה עצם דיגיטלי: 10.1650/0010-5422(2001)103[0287:GVITCO]2.0.CO;2.
↑  זג צהוב-מקור, אתר טיולי
↑  Bahn, H.; Ab, A. (1974). "The avian egg: incubation time and water loss" (PDF). The Condor 76 (2): 147–152. מזהה עצם דיגיטלי: 10.2307/1366724. JSTOR 1366724.
1 2 3  Rolando, Antonio; Laiolo, Paola (April 1997). "A comparative analysis of the diets of the chough Pyrrhocorax pyrrhocorax and the alpine chough Pyrrhocorax graculuscoexisting in the Alps". Ibis 139 (2): 388–395. מזהה עצם דיגיטלי: 10.1111/j.1474-919X.1997.tb04639.x.
↑  Silverstein Alvin; Silverstein, Virginia (2003). Nature's champions: the biggest, the fastest, the best. Courier Dover Publications. p. 17. מסת"ב 0-486-42888-5.
↑  Baumgart, W. (1967). "Alpendohlenkolonien in Felsschächten des Westbalkan". Journal für Ornithologie (בגרמנית) 108 (3): 341–345. מזהה עצם דיגיטלי: 10.1007/BF01671883
1 2 3  Delestrade, Anne; Stoyanov, Georgi (1995). "Breeding biology and survival of the Alpine Chough Pyrrhocorax graculus" (PDF). Bird Study 42 (3): 222–231. מזהה עצם דיגיטלי: 10.1080/00063659509477171.
↑  Harrison, Colin James Oliver (1975). A field guide to the nests, eggs and nestlings of European birds: with North Africa and the Middle East. Collins. עמוד 316. מסת"ב 0-00-219249-7.
↑  Starck, J Matthias; Ricklefs, Robert E. (1948). Avian growth and development. Evolution within the altricial precocial spectrum. New York: Oxford University Press. עמוד 7. מסת"ב 0-19-510608-3.
↑  Rahn, H.; Ar, A. (1974). "The avian egg: incubation time and water loss". The Condor 76 (2): 147–152. מזהה עצם דיגיטלי: 10.2307/1366724.
↑  Black, Craig Patrick; Snyder, Gregory K (1980). "Oxygen transport in the avian egg at high altitude". American Zoologist 20 (2): 461–468. מזהה עצם דיגיטלי: 10.1093/icb/20.2.461.
↑  McKibbin, René; Bishop, Christine A. (2008). "Feeding observations of the western Yellow-breasted Chat in the south Okanagan valley British Columbia, Canada during a seven-year study period" (PDF). British Columbia Birds 18: 24–25.
↑  Delestrade, Anne (1994). "Factors affecting flock size in the Alpine Chough Pyrrhocorax graculus". Ibis 136: 91–96. מזהה עצם דיגיטלי: 10.1111/j.1474-919X.1994.tb08135.x.
↑  Wall, Stephen B. Vander (1990). Food hoarding in animals. University of Chicago Press. עמוד 306. מסת"ב 0-226-84735-7.
1 2  Laiolo, Paola; Rolando, Antonio.; Carisio, Lorendana (2001). "Winter movements of the Alpine Chough: implications for management in the Alps" (PDF). Journal of Mountain Ecology 6: 21–30.
↑  "A year in the life of Choughs". Birdwatch Ireland. נכתב ב-6 בפברואר 2008.
↑  Blumstein, Daniel T.; Foggin, J. Marc (March 1993). "Playing with fire? alpine choughs play with a Tibetan red fox". Journal, Bombay Natural History Society 90: 513–515
↑  Rothschild, Miriam; Clay, Theresa (1953). Fleas, flukes and cuckoos. A study of bird parasites. London: Collins. עמ' 89, 95.
↑  (ברוסית) Georgiev B. B.; Kornyushin, VV.; Genov, T. (1987). "Choanotaenia pirinica sp. n. (Cestoda, Dilepididae), a parasite of Pyrrhocorax graculus in Bulgaria". Vestnik Zoologii 3: 3–7.
↑  Kellogg, V. L.; Paine, J. H. (1914). "Mallophaga from birds (mostly Corvidae and Phasianidae) of India and neighbouring countries". Records of the Indian Museum 10: 217–243.
↑  Delestrade, A. (1993). "Statut, distribution et abondance du chocard à bec jaune Pyrrhocorax graculus en Corse [translated: Status, distribution and abundance of the Alpine Chough Pyrrhocorax graculus in Corsica, Mediterranean France]". Alauda (בצרפתית) 61 (1): 9–17. ISSN 0002-4619.
↑  BirdLife International (2012). "Pyrrhocorax graculus". IUCN Red List of Threatened Species. Version 2013. 2. International Union for Conservation of Nature. Retrieved 26 November 2013.
↑  Yalden, Derek; Albarella, Umberto (2009). The history of British birds. Oxford University Press. עמ' 44–46. מסת"ב 0-19-921751-3.
↑  Tomek, Teresa; Bocheński, Zygmunt (2005) "Weichselian and Holocene bird remains from Komarowa Cave, Central Poland." Acta zoologica cracoviensia 48A(1–2) 43–65
1 2  Stoyanov, Georgi P.; Ivanova, Teodora; Petrov, Boyan P.; Gueorguieva, Antoaneta (2008). "Past and present breeding distribution of the alpine chough (Pyrrhocorax graculus) in western Stara Planina and western Predbalkan Mts. (Bulgaria)". Acta Zoologica Bulgarica. נספח 2, עמ' 119–132.
↑  Rolando, Antonio; Patterson, Ian James (1993). "Range and movements of the Alpine Chough Pyrrhocorax graculus in relation to human developments in the Italian Alps in summer". Journal of Ornithology 134 (3): 338–344. 10.1007/BF01640430 :מזהה עצם דיגיטלי.
↑  Pain, Debbie; Dunn, Euan (1996). "The effects of agricultural intensification upon pastoral birds: lowland wet grasslands (The Netherlands) and transhumance (Spain)". Wader Study Group Bulletin 81: 59–65.
↑  Sekercioglu, Cagan H; Schneider, Stephen H.; Fay, John P. Loarie; Scott R. (2008). "Climate change, elevational range shifts, and bird extinctions" (PDF). Conservation Biology 22(1): 140–150. מזהה עצם דיגיטלי: 10.1111/j.1523-1739.2007.00852.x. PMID 18254859.
↑  Reyes, Juan Carlos Rando (2007). "New fossil records of choughs genus Pyrrhocorax in the Canary Islands: hypotheses to explain its extinction and current narrow distribution". Ardeola 54 (2): 185–195.
ביצת זג במוזיאון ויסבאדן.