Banding data collected between 1988 and 1991 shows the
approximate pattern of Rufous Hummingbird movements
through Oregon. One of the goals of the hummingbirds and
flowers project is to collect migration pattern data for
other parts of the Cascadia region.

The banding data I collected shows two distinct waves
the first beginning (on the graph) at February 28 and
continuing until the end of April. The first wave is
mostly males, probably after-second-year males (based
on back color). The second wave is a mix of males and
females.

A loess analysis of the distribution of all captures
per day can be seen at:
http://columbia-pacific.interrain.org/ahscience/humm/ruhuband.GIF

The hummingbird and flower project will hopefully allow
us to test to see if this pattern is purely coastal, coastal
at lower latitudes or that it holds throughout the region.

And by collecting data on flower phenology we can compare
hummingbird movements to peak blossoming periods.

--
Mike Patterson
Expounder of Scientific Wisdom
Astoria High School, Astoria OR
http://columbia-pacific.interrain.org/ahscience/

I can't understand why people are frightened by new ideas.
I'm frightened of old ones.
- John Cage