In northern Taiwan, birdwatchers once observed how a ten-kilometer stretch of mountains was divided up between ten crested serpent eagles. After four of them had succeeded in finding mates, the pairs kept themselves to themselves in their irregularly shaped territories, building their nests around a kilometer apart.
曾有鳥友觀察，在北台灣郊區一處約十公里的山區，連綿幾座山頭，分屬十隻大冠鷲領域，其中四對成功配對後，井水不犯河水，井然有序各自分散在相距約一公里的不規則範圍築巢。