Possible Clues:

• Bird English composer recalled
• Diver in church land using river, not lake
• Below force of gravity, rise endlessly as bird
• Crested water-bird
• English composer's written about in flier
• Reg, might that be a bird?
• Bird close to lapwing, rising type without tail
• Iceberg holds back diver
• Composer twisting tail of fire bird?
• Water bird with great crested and little species