Foro de Observation.Org España

I would like to know which species this is
It concerns this observation
http://observado.org/waarneming/view/133474577 (http://observado.org/waarneming/view/133474577)
Con dudas Mosquitero Siberiano - Phylloscopus collybita tristis observed at 2017-01-07 Spain - Bajo Guadalquivir
Fotos:








thanks in advance Eduardo José Rodríguez Rodríguez