Say Hello to the Snowy Animals!

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Roulin, Alexandre; Richner, Heinz; Ducrest, Anne-Lyse (1998). "Genetic, environmental, and condition‐dependent effects on female and male ornamentation in the barn owl Tyto alba". Evolution. 52 (5): 1451–1460. doi: 10.1111/j.1558-5646.1998.tb02026.x. PMID 28565392. S2CID 23689499. The hollow hairs reflect sunlight and help keep the animals cool in summer and warm in winter. Caribou also have large hooves that act like snowshoes, allowing them to walk on top of deep snow. a b c d e f g Murie, O. J. (1929). "Nesting of the Snowy Owl" (PDF). The Condor. 31 (1): 3–12. doi: 10.2307/1363262. JSTOR 1363262. Pitelka, F. A. & Batzli, G. O. (1993). "Distribution, abundance, and habitat use by lemmings on the north slope of Alaska". In: The biology of lemmings, N. C. Stenseth and R. A. Ims (eds.), pp. 213–236. London: Academic Press.

Fun fact: On a clear day a polar bears nose can be seen from up to six miles away with a pair of binoculars. Dove, Carla J.; Coddington, Charles P. J. (September 2015). "Forensic techniques identify the first record of Snowy Owl ( Bubo scandiacus) feeding on a Razorbill ( Alca torda)". The Wilson Journal of Ornithology. 127 (3): 503–506. doi: 10.1676/14-176.1. S2CID 84091677. Leung, Marlene Leung (5 January 2014). "Snowy owl invasion: Birds spotted as far south as Florida". CTV News.

Snow is not white

Allen, Maximilian L.; Ward, Michael P.; Južnič, Damjan; Krofel, Miha (2019). "Scavenging by Owls: A Global Review and New Observations from Europe and North America". Journal of Raptor Research. 53 (4): 410. doi: 10.3356/0892-1016-53.4.410. S2CID 207933662. Lundberg, Arne (1986). "Adaptive Advantages of Reversed Sexual Size Dimorphism in European Owls". Ornis Scandinavica. 17 (2): 133–140. doi: 10.2307/3676862. JSTOR 3676862. a b Johnsgard, P. A. (1988). North American owls: biology and natural history. Smithsonian Institution. a b c d Sutton, G. M. (1932). "The exploration of Southampton Island. Part II, Zoölogy. Section 2.-The birds of Southampton Island". Memoirs of the Carnegie Museum. 12 (2): 1–275. doi: 10.5962/p.234852. S2CID 164727574. This species presence and numbers is dependent on amount of food available. In "lemming years", snowy owls can appear to be quite abundant in habitat. [6] Numbers of snowy owls are difficult to estimate even within studies that take place over decades due to the nomadic nature of adults. [8] The population of Scandinavia has long been perceived as very small and ephemeral with Finland holding 0–100 pairs; Norway holding 1–20 pairs and Sweden holding 1–50 pairs. [8] [244] A low breeding population within European Russia has been estimated to hold 1,300–4,500 pairs and Greenland to have 500–1,000 pairs. [245] [246] Other than northern part of the American continent, a majority of the snowy owl's breeding range is in northern Russia, but overall estimates are not known. [8] [247] An exact count of 4,871 individuals were seen on surveys between the Indigirka and Kolyma rivers. [5] The numbers estimated by Partners in Flight and other authors by the 2000s was that North America held about 72,500 snowy owls, about 30% of which were juveniles. [248] [249] The Canadian population of snowy owls was estimated at 10,000–30,000 (in the 1990s) or even to 50,000–100,000 individuals, perhaps improbably. [250] [251] [252] Within Canada, the population on Banks Island was once claimed at up to 15,000–25,000 in productive years and in Queen Elizabeth Islands at about 932 individuals. [127] [253] Alaska is the only state with breeding snowy owls but has probably quite a bit fewer breeding owls than does Canada. [254] Furthermore, the Partners in Flight and the IUCN estimated that the world population was roughly 200,000–290,000 individuals as recently as the 2000s. [255] [256] [257] However, in the 2010s, it has been discovered that all prior estimates were extremely excessive and that more precise numbers could be estimated with better surveying, phylogeographic data and more insights into the owl's free-wheeling wanderings. [2] [8] It is now believed that there are only 14,000–28,000 mature breeding pairs of snowy owls in the world. [8] [13] During lemming declines, the number of nesting females may drop down to as low as 1,700 worldwide, a dangerously low number, and the number of snowy owls worldwide is less than 10% of what it was once thought to be. [8] [13] [138] Due to the small and rapidly declining population, the snowy was uplisted in 2017 to being a vulnerable species by the IUCN. [2] A 52% decline has been inferred for the North American population since the 1960s with another even more drastic estimate placing the decline from 1970 to 2014 at 64%. [258] Trends are harder to delineate in Scandinavia but a similar downward trend is thought to be occurring. [8] [244] Snowy owls are listed in Appendix II of the Convention on International Trade in Endangered Species (CITES) meaning international trade (including in parts and derivatives) is regulated. [3] Anthropogenic mortality and persecution [ edit ] Snowy owls often favor airports, such as this one at Gerald R. Ford International Airport, in winter but the risk of birdstrike is high in such areas.

When snowy owls are spotted further south of their usual range they often seem unafraid of humans, perching conspicuously on buildings, fences, posts or even on the ground.Belterman, R. H. R.; De Boer, L. E. M. (1984). "A karyological study of 55 species of birds, including karyotypes of 39 species new to cytology". Genetica. 65: 39–82. doi: 10.1007/BF00056765. S2CID 37933718. Krasnov, Y. (1985). To the biology of the Snowy Owl in the Eastern Murman. Birds of Prey and Owls in the Nature Reserves of the Russian Federation. TSNIL GLAVOKHOTA, pp. 110–116. Saskatchewan Natural History Society (1957). "Notes on the Barred Owl and the Snowy Owl in Alberta". Blue Jay. 15 (4): 153. doi: 10.29173/bluejay1721. Diving: Penguins are really fast swimmers, up to 60 km/h. The deepest dives recorded lasted 16 minutes at 534m. The average dive is 5 to 6 minutes around 100m. Depth and duration of a dive vary from place to place and availability of surface food . Boxall, P. C.; Lein, M. R. (1989). "Time budgets and activity of wintering Snowy Owls" (PDF). Journal of Field Ornithology. 60 (1): 20–29.

Boev, Z. (1998). "First fossil record of the Snowy Owl Nyctea scandiaca (Linnaeus, 1758) (Aves: Strigidae) from Bulgaria". Historia Naturalis Bulgarica. 9: 79–86.a b c Holt, Denver W.; Zetterberg, Steven A. (2008). "The 2005 to 2006 Snowy Owl Irruption Migration to Western Montana". Northwestern Naturalist. 89 (3): 145–151. doi: 10.1898/NWN07-19.1. S2CID 85885670. Stewart, J. R. (2007). "The fossil and archaeological record of the Eagle Owl in Britain" (PDF). British Birds. 100 (8): 481. a b c d Kerlinger, P.; Lein, M. R. (1988). "Causes of Mortality, Fat Condition, and Weights of Wintering Snowy Owls" (PDF). Journal of Field Ornithology. 59 (1): 7–12.

a b c d e f g h i Keith, L.B. (1960). "Observations of Snowy Owls at Delta, Manitoba". Canadian Field-Naturalist. 74: 106–112. Dorogoy, I.V . (1987). Ecology of small mammal predators in Wrangel Island and their role in the dynamics of lemming numbers. Vladivostok: DVO AN SSSR. (In Russian).The snow leopard is a large cat native to the cold, dry mountain ranges of Central and South Asia. They live in altitudes between 9800 feet and 17,000 feet. The EADS Harfang, drone aircraft developed by the French Air Force, is named in French for the snowy owl ( Harfang des neiges). Root, T. R. (1988). Atlas of Wintering North American Birds: An Analysis of Christmas Bird Count Data. University of Chicago Press, Chicago, IL, USA.