![]()
26
Zumbadores Ingiriendo Compuestos Altos en Minerales). Journal of Field Ornithology 69, 257–261 (1998).
48. Henderson, J., Hurly, T. A. & Healy, S. D. Rufous hummingbirds’ memory for flower location. Animal Behaviour 61, 981–986(2001).
49. Hurly, T. A., Franz, S. & Healy, S. D. Do Rufous Hummingbirds ( Selasphorus rufus) use visual beacons? Animal Cognition 13,
377–384 (2010).
50. Gass, C. L. & Lertzman, K. P. Capricious mountain weather: a driving variable in hummingbird territorial dynamics. Can. J. Zool. 58,
1964–1968 (1980).
51. McGrath, L. J., Van Riper III, C. & Fontaine, J. J. Flower power: tree flowering phenology as a settlement cue for migrating birds.
Journal of Animal Ecology 78, 22–30 (2009).
52. Jones, T. & Cresswell, W. The phenology mismatch hypothesis: are declines of migrant birds linked to uneven global climate
change? Journal of Animal Ecology 79, 98–108 (2010).
53. Courter, J. R. Changes In Spring Arrival Dates of Rufous Hummingbirds (Selasphorus rufus) In Western North America In the Past
Century. The Wilson Journal of Ornithology 129, 535–544 (2017).
54. Wagner, D. L. Insect Declines in the Anthropocene. Annu. Rev. Entomol. 65, 457–480 (2020).
55. Aldridge, G., Inouye, D. W., Forrest, J. R. K., Barr, W. A. & Miller‐Rushing, A. J. Emergence of a mid-season period of low floral
resources in a montane meadow ecosystem associated with climate change. Journal of Ecology 99, 905–913 (2011).
56. Howell, S. N. G. Molt in North American Birds. (Houghton Mifflin Harcourt, 2010).
57. Bishop, C. A. et al. Hummingbirds and bumble bees exposed to neonicotinoid and organophosphate insecticides in the Fraser
Valley, British Columbia, Canada: Hummingbirds, bees, and neonicotinoids in Canada. Environmental Toxicology and Chemistry 37,
2143–2152 (2018).
58. Graves, E. E. et al. Analysis of insecticide exposure in California hummingbirds using liquid chromatography-mass spectrometry.
Environ Sci Pollut Res 26, 15458–15466 (2019).
59. Godfray, H. C. J. et al. A restatement of the natural science evidence base concerning neonicotinoid insecticides and insect
pollinators. Proceedings of the Royal Society B: Biological Sciences 281, 20140558 (2014).
60. Hallmann, C. A., Foppen, R. P. B., van Turnhout, C. A. M., de Kroon, H. & Jongejans, E. Declines in insectivorous birds are
associated with high neonicotinoid concentrations. Nature 511, 341–343 (2014).
61. Eng, M. L., Stutchbury, B. J. M. & Morrissey, C. A. A neonicotinoid insecticide reduces fueling and delays migration in songbirds.
Science 365, 1177–1180 (2019).
62. Averett, J. P. et al. Non-Native Plant Invasion along Elevation and Canopy Closure Gradients in a Middle Rocky Mountain Ecosystem.
PLOS ONE 11, e0147826 (2016).
63. Rubus armeniacus. https://www.fs.fed.us/database/feis/plants/shrub/rubarm/all.html.
64. Alexander JD, Macias CC, Contreras SM, Younkman D, Luszcs T, Maria RV, Smith B, Casey D. 2020. An integrated conservation
strategy for western temperate, Mexican pine-oak, and tropical cloud forest Birds: North America to Central America (DRAFT).
Partners in Flight and Klamath Bird Observatory, Ashland, Oregon.
65. Bishop CA. Woudneh MB, Maisonneuve F, Common J, Elliott JE, Moran AJ. 2020. Determination of neonicotinoids and butenolide
residues in avian and insect pollinators and their ambient environment in Western Canada (2017, 2018). Science of the Total
Env. 737 (2020) 139386. https://doi.org/10.1016/j.scitotenv.2020.139386.
66. Fink, D., T. Auer, A. Johnston, M. Strimas-Mackey, O. Robinson, S. Ligocki, B. Petersen, C. Wood, I. Davies, B. Sullivan, M. Iliff, S.
Kelling. 2020. eBird Status and Trends, Data Version: 2018; Released: 2020. Cornell Lab of Ornithology, Ithaca, New York.
https://doi.org/10.2173/ebirdst.2018
67. Hill, G., Robert R. Sargent, & Martha B. Sargent. (1998). Recent Change in the Winter Distribution of Rufous Hummingbirds. The
Auk, 115(1), 240-245. doi:10.2307/4089135
68. Jason R. Courter "Changes In Spring Arrival Dates of Rufous Hummingbirds (Selasphorus rufus) In Western North America In the
Past Century," The Wilson Journal of Ornithology, 129(3), 535-544, (1 September 2017)