streaked horned lark vs horned lark

eBird, Ithaca, New York. The effects of predators in increasingly urbanized landscapes, including increased predation pressure from domestic cats and urban native species such as Northwestern Crows, may threaten birds attempting to nest in Canada. Biologist, Delta, British Columbia. 285 pp. Streaked Horned Lark nests on the ground where its clutch of three to five eggs is placed next to a tuft of vegetation or small object. In addition, area searches were conducted at 6 sites on Vancouver Island (between 30 and 160 minutes at each site). Ministry of Environment, Lands and Parks, Wildlife Branch, Victoria, British Columbia. Brooks, A. Wildlife Bulletin No. It is also listed as Threatened under the US federal Endangered Species Act, and as Endangered in Washington State. In the lower Fraser River valley, birds were first collected in the late 1890s, near Sumas Lake. comm. Conservation Biology 18:455-465. Overview; ID info; Life History; Maps; Sounds; Horned Lark Photos and Videos. Rural residents’ free ranging domestic cats: a survey. Stangel (eds.). Similarly, Beauchesne (2010b, 2012, 2013) surveyed the Nanaimo airport area for Coastal Vesper Sparrow for 16, 11 and 22 days over three consecutive breeding seasons. Life history variation between high and low elevation subspecies of horned larks Eremophila spp. (2011) found a mean clutch size of 3.05 (Western Washington; n = 135 clutches; 95% CIs 2.93, 3.17). B-86. Davidson, P.J.A. 1997). The streaked horned lark is endemic to the Pacific Northwest, and is a subspecies of the wide-ranging horned lark. Pearson, S.F., M. Hopey, W.D. 2005. Stangel (eds.). Stinson, D.W. 2005. Status and management of neotropical migratory birds. (2010a) surveyed 246 sites on southeastern Vancouver Island and the Gulf Islands in 2009; while these particular surveys targeted Coastal Vesper Sparrow, they took place in habitats suitable for Streaked Horned Lark. Streaked Horned Lark habitat characteristics. UBC Press, Vancouver, British Columbia. The Academy of Natural Sciences, Philadelphia, and the American Ornithologists’ Union, Washington, D.C. 24 pp. Very little is known about the ecology of Streaked Horned Lark in British Columbia, therefore most of the following is inferred from studies done on this subspecies in the US parts of its range, or other subspecies elsewhere in the species’ range. For example, in the 1960s this subspecies nested on Sea Island in habitat near the current boat launch, whose construction destroyed this habitat (Cooper pers. 2015. eBird checklist: eBird: An online database of bird distribution and abundance. Populations from coastal British Columbia probably moved south in autumn to join permanent residents in southern Washington and Oregon or may have moved as far as California (American Ornithologists’ Union 1957), but a few birds evidently overwintered based on winter (January) specimen records from the Fraser delta (Munro and Cowan 1947). Camfield et al. Couturier, D. Lepage, and C.M. 1997). 2014. The Canadian Wildlife Service, Environment and Climate Change Canada, provides full administrative and financial support to the COSEWIC Secretariat. eBird, Ithaca, New York. For example, many of the sites used by larks on the islands in the Columbia River are small, but are adjacent to open water, which provides the landscape context needed. Three Streaked Horned Lark nests have been found with eggs in British Columbia: two with three eggs and one with four eggs (Campbell et al. Conservation Data Centre, British Columbia Ministry of Environment, Victoria, British Columbia. Wolf, A., and H. Anderson. This results in logs that act like ‘rolling pins’, compacting sand and restricting its movement rather than acting as dune stabilizing structures that also allow for inshore sand movement; this considerably alters the dynamics of sandy beach and dune communities (Maser and Sedell 1994; Fairbarns et al. Male. This report may be cited as follows: COSEWIC. 1974. She is currently a member of the COSEWIC Birds SSC, and a daily contributor to eBird. Streaked Horned Lark habitat management and population monitoring report, spring/summer 2013. (2011) report a mean of 0.23 ± 0.04 fledglings per egg laid (n = 123 nests; 95% CIs 0.15, 0.31). On southeastern Vancouver Island domestic or feral cats were frequently seen during bird surveys at grassland sites, including the single site where a displaying Streaked Horned Lark was observed during the 2002-2003 surveys (Beauchesne 2002, 2003). In the lower Fraser River valley, breeding was concentrated near the mouth of the Fraser River on Sea, Iona, and Lulu islands, with other known breeding localities including the University of British Columbia at Point Grey, and Chilliwack (Campbell et al.

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