They go by the common name of Hummingbird Moths. Here are some web sites
with info. First one has nice photo of one of the most hummingbird-like looking
moth of the group. Second is more inclusive info.

http://www.fcps.k12.va.us/StratfordLandingES/Ecology/mpages/hummingbird_moth.h
tm

www.npwrc.usgs.gov/help/faq/bflymoth/sphinx.htm

If you do a web search on google or similar search engine you will find lots
more references to these moths.

Cheers! Judy

Judy Rowe Taylor
Mukilteo, WA
caratfeathers at aol.com