ML617342497

觀察細節

The white morph RFB adult is a large overall white bird with diagnostic underwing pattern of dark primary and secondary coverts with white tertials. The other is an adult dark morph RFB, gray/brown overall with dark underwing coverts, a large blue/gray beak and white undertail coverts seen in one of the pictures (diagnostic for adult dark morph). Both seen from cruise ship far from shore. My best guess is the location is off Honduras waters.