张力钢丝上的丙烯酸覆盖层，鹦鹉嘴畸形，幼驹
The acrylic covering on the tension wires in this photograph, which have been surgically placed to treat parrot mouth in a foal, prevents trauma and allows nursing.
Courtesy of Dr. Lisa Pearson.
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The acrylic covering on the tension wires in this photograph, which have been surgically placed to treat parrot mouth in a foal, prevents trauma and allows nursing.
Courtesy of Dr. Lisa Pearson.
