********************************************** For those that be might interested, there is a lengthy paper in the above. One titled "Avian Migration: The Ultimate Red-eyed Flight", (Bartell and Moore) with some recent research into bird's photo-periods during migration that leans heavily towards Zugunruhe aspects. Nice read. There is also an article "Nature is Dead, Long Live Nature (Cabin) on conservation efforts to control control invasive exotics for birds etc. on Hawaii Is. -- Brush Freeman Edit your Freelists account settings for TEXBIRDS at //www.freelists.org/list/texbirds Reposting of traffic from TEXBIRDS is prohibited without seeking permission from the List Owner