Date: 6/6/19 11:14 am From: <philliplc...> Subject: [obol] Re: Describing migrant shorebirds, was: Late Coos Shorebirds
> some migrate north to a latitude somewhere short of > the
population's breeding range and then stage for the > summer before
heading back south.
Just based on seawatch observations this also appearsto be true of
some immature/non-breeding scoters andloons, and possibly also some
alcids with large populationsto the north.
It may also be true of albertaensis California Gulls, asthere is
banding evidence some fall adults move west to the B.C. coast before
heading south in an angled route.It would make sense that some
percentage of the manycoastal oversummering immatures here (which
range quite large) were Canadian born and partially followed the
normal migratory return route of their parents.