ML462927661
投稿者
日付
場所
- 年齢と性別
- 成鳥メス - 1
- 音声
- 地鳴き
- プレイバック(音声の再生)
- 指定なし
視聴覚メディア・ノート
Notice the bizarre, "kazoo-like" element to the species' alarm call. Background vocalizations : Barn Swallow, Red-winged Blackbird, Swamp Sparrow, Wood Thrush, Purple Martin, and Green Frog.
観察結果の詳細
This evening, my goal was to digitally record the alarm calls of my nesting Osprey. My active Osprey platform is on my small lake, out on a peninsula. The pair have three, half-grown young. I deliberately started walking towards the active nest platform on the peninsula with my recording gear on a tripod to elicit alarm. I got close enough that the attendant bird, the female, became alarmed and started calling. I would make a 1-minute recording, then walk 25 feet closer to make a slightly better one. At two points, the adult bird flew off, circled, and came right back to the nest, vocalizing in flight. The final recording, uploaded here, was made with a parabolic dish about 200 feet from the nest with the female on the nest giving the alarm calls recorded below. At this close range, and on the recording, you can hear the bizarre, "kazoo-like" vocalizations interwoven into normal alarm calling that this female gave because of my close approach. I am assuming this is part of the species' typical alarm call and not just unique to this individual female. The nestlings were NOT vocalizing. According to: [Bierregaard, R. O., A. F. Poole, M. S. Martell, P. Pyle, and M. A. Patten (2020). Osprey (Pandion haliaetus), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA]: "Alarm Call, given by female more than male ....... Distance from nest at which Alarm Call is given depends on stimulus and individual’s habituation, but generally given only within 50–100 m of nest or perch. This call often changes to a harsh, guttural croak when birds are stressed by humans very close to their nests." This "guttural croak" is what I am calling "kazoo-like."
追加される種
テクニカル・インフォメーション
- レコーダー
- Sound Design's MixPre-3
- マイク
- Sennheiser MKH-20
- アクセサリ
- Telinga Parabolic Dish
- オリジナルのファイルサイズ
- 17.28 MB