Baseline survey on the usage of Mai Po Nature Reserve by roosting Barn Swallow Hirundo rustica and Yellow Wagtail Moticilla flava
Posted 10 September 2021
roosting Barn Swallow Hirundo rustica and Yellow Wagtail Moticilla flava
© WWF-Hong Kong
Baseline survey on the usage of Mai Po Nature Reserve by roosting Barn Swallow Hirundo rustica and Yellow Wagtail Moticilla flava