Calcarius ornatus (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Calcarius ornatus" in Italian language version.

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animaldiversity.org

(EN) Manion, L., Calcarius ornatus (On-line), su Animal Diversity Web, 2012. URL consultato il 17 marzo 2018.

(EN) Chestnut-collared Longspur (Calcarius ornatus), su Handbook of the Birds of the World. URL consultato il 17 marzo 2018.

(EN) BirdLife International 2017, Calcarius ornatus, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.

(EN) F. Gill e D. Donsker (a cura di), Family Calcariidae, in IOC World Bird Names (ver 9.2), International Ornithologists’ Union, 2019. URL consultato il 17 marzo 2018.