Hummingbirds and Flowers

We invite you to watch and count Rufous Hummingbirds in Western North America.

Are you really seeing a Rufous Hummingbirds?
Arrival phenology maps
Trend analysis
Rufous Hummingbird in Oregon
References

This site WILL NOT be collecting hummingbird reports for 2006, but you can still help monitor humminbirds at Journey North. Please include the following:

1. location (include latitude and longitude if possible).
2. date of first detection
3. sex (males and females generally arrive on different dates and we want first detection reports for both).

It is important that you include all the above information and that it is for the first date you saw hummingbirds in 2006. Since we do not have the capacity to monitor extra-limital (vagrant) reports, those reporting from outside the currently expected range for Rufous Hummingbirds (east of the Rocky Mountains) will not see their reports on any maps found at this site. We are also not currently able to track post-breeding or winter reports. Extra-limital reports are of interest however and may be reported to one of the following sites:

Winter reports - Winter hummingbirds
Ruby-throated Hummingbird Reports

You can also continue to contribute to the regional database by counting hummingbirds at your feeder. Submit your daily feeder counts to birdnotes. Daily hummingbird counts can be entered there through the "My yard" function.

Cummulative Rufous Hummingbird arrival pattern for spring 2001-03

Finding my Latitude and Longitude in
         United States
         Canada
Identifying native flowers important to hummingbirds
         Salmonberry (Rubus spectabilis)
         Red Flowering (Ribes sanguineum)
         Hairy Manzanita (Arctostaphylos columbiana)
         Black Twinberry (Lonicera involucrata)
Links on behavior and ecology
         Rufous display observations
         Comparisons of Anna's and Rufous metabolics

Three year trend for first detections
by latitude

Day of first detection is plotted against decimal degrees of latitude for birds observed on the Oregon coast, Puget Sound, coastal British Columbia and Alaska. Interior reports are treated separately.

And for possible evidence of a difference in arrival phenology by age for male Rufous Hummingbirds based on back color click here.

Coefficients of correlation indicate a greater than 99.9%
probability that the regressed lines reflects the trend of
the data and that the rate of the arrival front is about 25km
(.20 latitude degrees) per day.

The bar graph at the left compares first detection reports per day for 2001 and 2002. West data includes all reports north of 42° latitude and west of 122° longitude (approximately the Cascade crest). East data is also north of 42° but east of 122°. The peaks most likely coincide with the peak of the migration east and west of the Cascades.

For a comparison of the first 90 days of 2005 to past years
go to click here.

For more information on hummingbirds
http://www.hummingbirds.net/index.html

and to track other migrants

Revised 01/19/2006
Neawanna Home Page | Ecological Observatory