1. Red-eyed Vireo (Green back, white underneath, black line over eye-brow)
2. Least Sandpiper (adult winter plumage, slightly decurved bill, legs look light-coloured, but hard to tell if it's because of mud/algae or actual colour)
3. Dunlin (molting into winter plumage, long decurved bill)
4. Pectoral Sandpiper (yellow legs, streaked breast with sharp line to white belly)