bittern 18/04/2019 22:03
Sand/pale martin: general comments?
I see [i]Riparia[/i] martins on occasion, without having ever had the chance to photograph them.
I am a little confused. Is either Sand Martin [i]Riparia riparia[/i] or Pale Martin [i]Riparia diluta[/i] commonly found in Hong Kong? Or both? Is it the case that the only subspecies of the latter that ventures into Hong Kong is [i]fokhiensis[/i]?
Are there any ID criteria that have proven particularly useful in Hong Kong?
[[i] Last edited by bittern at 19/04/2019 08:29 [/i]]