Lapland longspur (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lapland longspur" in English language version.

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allaboutbirds.org

Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London, United Kingdom: Christopher Helm. pp. 84, 219. ISBN 978-1-4081-2501-4.

BirdLife International (2017). "Calcarius lapponicus". IUCN Red List of Threatened Species. 2017: e.T22721033A111138693. doi:10.2305/IUCN.UK.2017-1.RLTS.T22721033A111138693.en. Retrieved 13 November 2021.
Tomek, Teresa; Bocheński, Zygmunt (2005). "Weichselian and Holocene bird remains from Komarowa Cave, Central Poland". Acta Zoologica Cracoviensia. 48A (1–2). Institute of Systematics and Evolution of Animals, Polish Academy of Sciences: 43–65. doi:10.3409/173491505783995743.
Custer, Thomas W.; Osborn, Ronald G.; Pitelka, Frank A.; Gessaman, James A. (1986). "Energy Budget and Prey Requirements of Breeding Lapland Longspurs near Barrow, Alaska, U.S.A." Arctic and Alpine Research. 18 (4): 415–427. doi:10.2307/1551091. ISSN 0004-0851. JSTOR 1551091.
Custer, Thomas W.; Pitelka, Frank A. (1978). "Seasonal trends in summer diet of the Lapland longspur near Barrow, Alaska". The Condor. 80 (3): 295–301. doi:10.2307/1368039. JSTOR 1368039.

Custer, Thomas W.; Osborn, Ronald G.; Pitelka, Frank A.; Gessaman, James A. (1986). "Energy Budget and Prey Requirements of Breeding Lapland Longspurs near Barrow, Alaska, U.S.A." Arctic and Alpine Research. 18 (4): 415–427. doi:10.2307/1551091. ISSN 0004-0851. JSTOR 1551091.
Custer, Thomas W.; Pitelka, Frank A. (1978). "Seasonal trends in summer diet of the Lapland longspur near Barrow, Alaska". The Condor. 80 (3): 295–301. doi:10.2307/1368039. JSTOR 1368039.

Custer, Thomas W.; Osborn, Ronald G.; Pitelka, Frank A.; Gessaman, James A. (1986). "Energy Budget and Prey Requirements of Breeding Lapland Longspurs near Barrow, Alaska, U.S.A." Arctic and Alpine Research. 18 (4): 415–427. doi:10.2307/1551091. ISSN 0004-0851. JSTOR 1551091.