Anna's Hummingbird dispersal
Here in Minneapolis, MN we have an adult male Anna's Hummingbird that is
visiting a feeder in a homeowners backyard. There has been speculation as
to how this bird ended up in Minnesota. I did some intial research and was
able to determine records of Anna's in various other states with the main
movement being north of California. I also found a reference in Birds of
California by Arnold Small that mentions summer dispersal north and up into
I'm curious to know what altitudes Anna's have been seen at in the
mountains of California.
The reason for my question is I am trying to form a hypothesis on how the
bird ended up here. Did it make its was up towards Alaska in Spring and
ended up on the other side of the continental divide when it moved south or
did it get blown by a storm or carried by the jet stream across? Off list
comments are probably best so I don't clog up the list with a discussion
others might not have an interest in.
A native California currently living and birding in the great white north.
Hennepin County, MN
- I see Anna's regularly at my Tahoe cabin's feeders at 6700 ft. I have not
seen them out in the higher mountain meadows where Rufous abound in August.
Since Rufous are even more altitude and cold tolerant than Anna's, I assume
Rufous are more common dispersants to places like Minnesota.
Richard C. Carlson
A native Minnesotan Living temporarily in California since 1975.
Full Time Birder, Biker & Rotary Bureaucrat
Palo Alto & Lake Tahoe, CA