Hello Olivier,
I accept that to more experienced NA ears the Swiss call does not sit
comfortably with Swainson’s Thrush. Bill Evans told me it ends at a frequency
that would make it atypical for the species, and some clear modulation would
also be desirable.
However, the Chaffinch call you a
Magnus,
The Swiss recording does not sound like a Swainson's Thrush to me, other
than superficially. The spectrographic signature of this call doesn't look
right, either. Could this simply be a Chaffinch? Its quite low-pitched, and
there seems to be a bit of echo. I rarely hear finches at night in
I like the idea of a detector for Catharus thrushes on Scilly! But there are
two places perhaps better qualified than that. This year saw three records in
Cork, southwest Ireland and just one on Scilly. But the ‘European’ capital for
North American vagrants is now Corvo in the Azores (actually i
