Lăstun de mal (Riparia riparia) Sand martin (Riparia riparia) Imagini preluate de pe https://www.thainationalparks.com/species/collared-sand-martin si https://scottishwildlifetrust.org.uk/2016/05/can-you-tell-the-difference-between-a-house-martin-sand-martin-and-swallow/ si https://www.featherbase.info/en/exhibit/2577