ハヤブサつがいが巣営する場所でのテリトリー侵入者への防衛行動を調べています。
We are investigating territorial defense behavior against intruders at the nesting
site of a breeding pair of Peregrine Falcons.
２０２６年 Day1 初回観察 (First observation)
2026/01/22(木) 快晴 １℃ 西6ｍ/ｓ
9：00 観察開始 start
| Date | Time | Intruder | Distance | Behavior_intruder | Falcon_response | Location | Note |
| 2026-01-26 | 09:10 | Crow | ~100m | Pass through | No response | Left feeding area | 上空通過 |
| 2026-01-26 | 09:18 | Black Kite | 50～100m | Pass through | No response | Left feeding area | 侵入・旋回 |
| 2026-01-26 | 09:45 | Osprey | ～50m | Circling | Alarm call, scramble | Central plucking site | 侵入・旋回・上昇 |
| 2026-01-26 | 09:45 | Black Kite | 50～100m | Circling | Attack | Central plucking site | 侵入・旋回 |
| 2026-01-26 | 09:51 | Black Kite | ~100m | Circling | No response | Left feeding area | 上空通過 |
11:00 観察終了 end
9：45 Moment of attck on a Black kite
まとめ (Summary)
ハヤブサ２羽の識別箇所の特定を急ぐ(写真材料集め)
オス・メスの特定特徴を掴む
ldentification of individual distinguishing
features in a breeding pair of Peregrine Falcons
Establishing diagnostic characteristics
for male and female individuals.
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