I recently got 2 ring-necked parakeets (one female and one male) and they don't fully trust me yet. the weather is getting colder but I make sure to keep the parakeets warm by closing the curtains and covering the side of the cage that faces the window by a cloth. They don't eat anything except for cooked rice and sunflower seeds. It's been two days since I noticed that their droppings seem a bit watery. Today I had to go out in the evening and when I came back there was a foul odor in my room. I feel like they're sick but I don't know what's wrong, can anyone help me?