ML238838971
投稿者
日付
場所
- 年齢
- 指定なし
- 性別
- 指定なし
- 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
These were "natural" pips -- ie not in response to playback. I had been waiting for a while for Tom to get there, and the bird started giving these pips from a willow tree on the edge of the lake. I hadn't made any noise or used any playback in a good half hour at this point.
観察結果の詳細
Description: In general, a largish Empidonax Flycather with a rounded head and a short, stubby bill and high-contrast wings. The bill appeared relatively short, blunt, and round for an Empidonax. The maxilla was gray, and the mandible was dull peach, with a more yellowish-peach color at the tomium. The lores were noticeably paler that the rest of the face, a sort of dull whitish. The eye ring was bold and crisp, but very narrow, and extended very slightly in the back, depending on the birds’ position. Sometimes, the eye ring was very round, but at some angles and positions, the eye ring had a very slight “teardrop” shape. The crown appeared greenish. In dull light, the crown appeared more gray than green, and in better light, the crown appeared more green than gray, but the best looks I had, in the best light, always made the crown appear a dull olive green, and more or less concolor with the back and nape. The throat was whitish and contrastingly paler than the auriculars and face, and wrapped around under the auriculars, in a pattern vaguely reminiscent of a Myrtle Warbler. The back was a dull olive green. The wing panel was dark gray-brown, appearing almost black in most lights, with crisp, high-contrast whitish (on the tertials and secondaries) to buffy-whitish (on the greater and median coverts) edges. The primaries appeared long, with a primary projection past the longest tertial about 2/3 the length of the exposed tertials. The primaries themselves had dull pale edges, including dull pale tips. The underparts faded from whitish on the throat to a very pale lemon-yellow on the belly, with a faint “vest” of smudgy dull gray streaks on the chest, more prominently on the sides. Vocalizations: 1: “pip” calls: These calls were given in response to playback and naturally (i.e. not in response to playback. This spectrogram represents one of the calls given naturally. To my ear, it was a short, hollow, “pip”, like those given by large Contopus (like Olive-sided Flycatcher or Smoke-colored Pewee). This was the only vocalization that was given naturally, and I heard this pip 50-60 times total while studying this bird. 2: song: A buzzy, fuzzy, “Ree-breer!” That was composed of a fuzzier upslurred “ree” and then a slightly clearer, but still full and fuzzy, “breer” that ascended and then descended. The bird only gave this song a few times, and it was always in direct response to playback 3: “reeoo” call. A fuzzy, buzzy, up-then-down “reeoo” call, with a very similar quality to the song. This was given often, but always after playback. I heard the bird give this call maybe 15-20 times total. Once playback got the bird’s attention, it would give this call for a few minutes before going back to silently foraging.
テクニカル・インフォメーション
- レコーダー
- マイク
- アクセサリ
- オリジナルのファイルサイズ
- 2.67 MB