If the Swallows are in Africa, how do they know it's Summer in England, do the Robins or Blackbirds phone them up?
Tis the length of the days and the temperature in Africa that does it.
plus the phone calls of course.
Joking aside, the Swans on our local park 'lake' didn't bother migrating this year.If there was ever a weather forecast.......
is conventionally believed to be the migration trigger, but there is increasing evidence that temperature changes have something to do with it as well.
This thread is now locked and can not be replied to.
OnePlus 5 review
See the work of famous artists playing with toys
iPad Pro 10.5in (2017) review
Comment faire une capture d’écran sur un Mac ?
© Copyright 2017 IDG UK. All Rights Reserved.