Link to English Wikipedia entry: Black-billed Nightingale Thrush
Link to German Wikipedia: Musendrosseln
Link to French Wikipedia: Grive à bec noir
Link to EOL.org: Catharus gracilirostris
Link to iNaturalist.org: Catharus gracilirostris
Links to my pictures: Black-billed Nightingale Thrush
Binomial Links for Catharus gracilirostris on www.guenther-eichhorn.com
Dr. Günther Eichhorn Travel Website
Soaring website