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
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
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
