During a morning stroll through vast salt fields in the seaside town of Samut Sakhon, I couldn't resist but take breathtaking photos of a large flock of birds. Close by, experienced birdwatcher Suchart Daengpayon (also known as Mr Tee) led a small group of foreign tourists on a trip to see the food-seeking behaviours of the spoon-billed sandpiper, an endangered shorebird species.