kHz
Beitragende/r
Walter A. Thurber Medien dieser/s Beitragenden
Datum
08:00
Ort
Hacienda Los Pinos
Usulután, El Salvador
Medien von diesem Ort Illustrierte Checkliste- Alter und Geschlecht
- juvenil, Geschlecht unbekannt - 1
- Verhalten
- Balz, Balzverhalten oder Paarung
- Tonaufnahmen
- Ruf
- Klangattrappe
- nicht spezifiziert
Kommentare
NOTES: WELL-FED, AGGRESSIVE NESTLING AT BASE OF TREE WHERE NEST FALLEN. WHEN BIRD WAS APPROACHED IT ABANDONED ITS CONCEALMENT POSE AND ADOPTED A THREAT POSTURE - MOUTH OPEN, WINGS SPREAD, CROWN ERECT. IT BEGAN TO SCREAM WHEN I REACHED OUT MY HAND A RASPY SCREAM USUALLY, BUT NOT ALWAYS, PRECEEDED BY A WHISTLE. THE SCREAM WAS PRODUCED DURING EXHALATION; THE WHISTLE MAY HAVE BEEN INHALATION. THIS SCREAM-WHISTLE VOCALIZATION IS HEARD UNDER OTHER CONDITIONS WHEN THERE IS NO THREAT OR FRIGHT BNA: These "screams" probably represent renditions of the "eee-grack" call (sensu BNA) given by a nestling in response to a perceived threat. [CAM - 23 February 2005]. Other Behaviors: Perform Visual Display, Emit Alarm. Habitat: River.
Technische Angaben
- Aufnahmegerät
- UHER 4000L
- Mikrofon
- Zubehör
- Parabola 45.7cm (18in)
Archivierungsinformationen
- digitalisiert
- 6 May 2002 - Shelagh A. Smith