ML616432984
Contributeur
Date
Site d'observation
Ipswich River Wildlife Sanctuary (Mass Audubon)
Essex, Massachusetts, United States
Fichiers multimédias de cet endroit Liste illustrée- Âge
- Non précisé
- Sexe
- Non précisé
- Repasse
- Non précisé
Détails de l'observation
At least! At boat ramp with grackles and red winged blackbirds. The photo of Merlin shows the spectogram at 21 seconds because it illustrates for me the difference between the rusty and redwing blackbird ‘sigh’. The latter is the higher-pitched sound and follows the rusty sigh at a lower pitch.
Informations techniques
- Enregistreur
- Microphone
- Accessoires
- Taille originale du fichier
- 1.98 MB