Hi Mark,
Recent research suggests that long-distance passerine
migrants are of South American and African, rather
than northern hemisphere, evolutionary origins. They
are effectively southern species coming north to breed
rather than northern species going south to winter.
Suyono
PS:
Another cause of birds occurring outside their normal
ranges is the "spring overshoot" in which birds
returning to their breeding areas overshoot and end up
further north than intended.
"Mark" wrote:
Recent research suggests that long-distance passerine
migrants are of South American and African, rather
than northern hemisphere, evolutionary origins. They
are effectively southern species coming north to breed
rather than northern species going south to winter.
Suyono
PS:
Another cause of birds occurring outside their normal
ranges is the "spring overshoot" in which birds
returning to their breeding areas overshoot and end up
further north than intended.
"Mark" wrote:
>
> Condiments of the seasoning, everyone.
>
> Has anyone heard from Donald lately?
>
> He said he would be away for a week from the end of
> last month. I'm sure he would have had a mountain of
> email to plough through when he got back but I
> expected to have had a response or announcement from
> him by now. Maybe he flew south for the winter.
>
> Mark (looking forward to Xmas because it is a time to
> eat nuts)
>