25只是什么时间的记录
8月16日报道称，沉湖湿地近期监测到25只彩鹮，是武汉有观测记录以来的最大群体。彩鹮在中国仍属少见的国家一级保护鸟类，但这个数量对应的是8月报道中的一次阶段性记录。
候鸟和游荡个体会随水位、食物和天气移动。9月20日转载旧名单而不标日期，会制造“仍在原地”的错觉；本页因此只保留保护区级范围，不声称今天仍可见25只。
深色鹮为什么会显出彩虹
彩鹮体型中等，嘴长而下弯，繁殖羽在合适光线下会显出绿、紫、铜色金属光泽；阴天或逆光时可能看起来近乎黑褐。幼鸟和非繁殖羽更暗淡，不能把“没有彩色”当作排除依据。
朱鹮体色以白色和粉红调为主，脸和腿红；黑脸琵鹭体色白、嘴端扁成匙状。远处最先比较体色、嘴形、飞行时颈部和腿的位置，再结合照片复核，不以稀有程度反推物种。
少见鸟群的正确观察顺序
先查看保护区或管理部门是否发布开放、预约和交通信息，再选择合法公共观察设施；未有公开更新时，把行程目标设为一般湿地鸟类，而不是承诺彩鹮。到场后用单筒镜远距离扫描，不为寻找旧鸟点进入芦苇、鱼塘或核心区。
不围堵、不播放声音、不用无人机跟飞，不公开群聚水面和夜栖地。若在公开区域偶遇彩鹮，只记录时间、天气、数量范围和行为，并将证据交给可信记录机构复核；精确位置延迟发布。
When was the flock of 25 recorded?
The August 16 report says monitoring had recently found 25 Glossy Ibises at Chenhu, the largest flock documented in Wuhan. The species remains scarce and nationally protected in China, but the figure belongs to a dated late-summer observation.
Migrants and wandering birds move with water, food and weather. Repeating the list on September 20 without its date would imply that all 25 remain. This page therefore retains only reserve-level locality and makes no present-day sighting claim.
Why a dark ibis can look iridescent
Glossy Ibis is medium-sized with a long down-curved bill. In favourable light breeding plumage reflects green, purple and bronze, but in cloud or backlight it can look almost dark brown. Juveniles and non-breeding birds are duller, so lack of colour does not rule it out.
Crested Ibis is mainly pale with a pink wash, red face and legs; Black-faced Spoonbill is white with a spatulate bill. At distance compare body colour, bill shape and the position of neck and legs in flight, then review photographs rather than reason from rarity.
The right sequence for a scarce flock
First check reserve access, reservations and transport notices, then use only legal public facilities. Without a current official update, make common wetland birds the trip goal and never promise Glossy Ibis. Scan with a scope and do not enter reeds, fishponds or core zones to find an old pin.
No crowding, playback or drone pursuit, and no publication of aggregation water or roost. If you encounter Glossy Ibis from a public area, record time, weather, count range and behaviour, submit evidence for trusted review, and delay any precise location.