My family's had our 5 chickens for about 2 years now, and theyre the first ones weve owned. One of our hens has always been obsessed with water ie whenever we took the lid off to fill it up, she'd run over and start drinking as fast as she could. Recently when i was watching them in the yard, i filled up an extra water container and she stood there drinking nonstop for a while. 3 times she walked away from the water and a huge mouthful of drool spilled out her beak. She's otherwise alert, energetic, clear eyes, and still lays eggs normally. Does anyone know what this means??? Im worried about her.