ML637303577
Přispěvatel
Matthew Francey Média od tohoto přispěvatele
Datum
Lokalita
Carden Alvar--Sedge Wren Marsh
Kawartha Lakes, Ontario, Canada
Média z této lokality Rozšířený seznam druhů- Věk
- Nespecifikováno
- Pohlaví
- Nespecifikováno
- Hlasová provokace
- Hlasová provokace nepoužita
Poznámky
Bird was 30m to east of bridge, in the open.
Podrobnosti k pozorování
Six in flight over marsh, two calling near bridge. First time observing the 'glug-a-glug' call being made. Bill snaps at start seem to be partial inflation of an air pouch along neck. The first 'glug' is bill horizontal, mouth opens and then the glug is heard as a gulp of air is forced into pouch. Second glug is a reach up with bill then a snap downward, as the air pouch is forced up and out in a piston-like manner. It looks to be a strenuous effort - muscles up and down throat/pouch are in hard use. The bird appears to tire as a call progresses.
Technické informace
- Rekordér
- Sound Devices MixPre-6 II
- Mikrofon
- Sennheiser MKH-8020
- Příslušenství
- Telinga parabola
- Původní velikost souboru
- 8.14 MB