- Dec 27 2:43 pm
Thanks northvanrob. If Anna’s Hummingbirds don’t migrate what did they used to do before humans started providing (heated) feeders? My guess is that there are no flowers in bloom in BC right now. I don’t want to sound rude, I’m trying to understand and the best answer I have found so far is the following (direct copy-paste) from wikipedia.org/wiki/Anna%27s_hummingbird
“While their range was originally limited to the chaparral of California and Baja California, it expanded northward to Oregon, Washington, and British Columbia, and east to Arizona in the 1960s and 70s. This rapid expansion is attributed to the widespread planting of non-native species, such as eucalyptus, as well as the use of urban bird feeders, in combination with the species' natural tendency for extensive postbreeding dispersal. In the Pacific Northwest, the fastest growing populations occur in regions with breeding-season cold temperatures similar to those of its native range. Northward expansion of the Anna's hummingbird represents an ecological release associated with introduced plants, year-round nectar availability from feeders supplied by humans, milder winter temperatures possibly associated with climate change, and acclimation of the species to a winter climate cooler than its native region. Although quantitative data are absent, it is likely that a sizable percentage of Anna's hummingbirds in the Pacific Northwest still do migrate south for winter, as of 2017.
In the 2017 Vancouver Official City Bird Election, Anna's hummingbird was named the official bird of the city of Vancouver, British Columbia, Canada, where it resides year round through winter.”
During the summer hundreds/thousands of Anna’s Hummingbirds make Whistler their home but then they leave for the Winter. My humble opinion is that having a food source in the Fall deters Anna’s Hummingbirds from leaving an area where they should not be for the Winter. It’s a catch-22 because the expert consensus is that the feeders need to remain up to help the hummingbirds passing through areas (like Whistler) from North to South.
Last night it got down to -22C with a wind chill of -32C and blowing snow. It is 2pm and -20C and normally we would have seen her a dozen times at the feeder before 9am.