Hi Linda, In order for a Doppler shift to noticeably change the color of light that much, the firefly would have to be traveling thousands of miles an hour! It may be that what you are seeing are multiple species of firefly.
The Museum of Science in Boston has published some web pages with information about how to identify fireflies using their flash color and pattern. Types Of Fireflies <https://legacy.mos.org/fireflywatch/types_of_fireflies> Flash Chart <https://legacy.mos.org/fireflywatch/flash_chart> Virtual Habitat <https://legacy.mos.org/fireflywatch/virtual_habitat> (interactive tool to help you learn to identify firefly flashes) These web pages are part of a citizen science project called Firefly Watch <https://legacy.mos.org/fireflywatch/>, which is designed to find out more about the distribution of the various firefly species. -Mike On Sat, Jun 28, 2014 at 10:49 PM, Linda Orkin <wingmagi...@gmail.com> wrote: > Does anyone else notice that some of the flashes look like different > colors. Reds and greens. Is this just like a Doppler shift type thing or > are they really like that? > > Linda > > -- Cayugabirds-L List Info: http://www.NortheastBirding.com/CayugabirdsWELCOME http://www.NortheastBirding.com/CayugabirdsRULES http://www.NortheastBirding.com/CayugabirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/Cayugabirds 3) http://birdingonthe.net/mailinglists/CAYU.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
