Possible Clues:

• Female waterfowl on water here
• Seems like a pale mother in Egypt
• So as to hold water, a bird gets back to 14 down
• Lake Nasser structure
• Man's trapped bird in high water barrier
• A hen of the water of Egypt
• River feature, one parent of ugly ducklings?
• Nile construction of 1902
• Into missile, stick a massive barrier
• Sight upstream from Luxor