I have a young gecko that sounded like a 'bird' when she is nervous or moving fast; she was like that since I bought her which is 4 or 5 months ago, she is still healthy at the moment. However, I have another female that is almost 2 years old, I've had her for over 1.5 yrs and had never heard a noise from her before. Recently, she also chirps like a bird when she is breathing fast. I am worried if this is a sign of illness?
p.s. I discovered that geckos have different sound, one of my adult 'beeps' when he wakes up in the evening; another one 'grrrr' when I do something that he doesn't like e.g. taking him to diferent directions that he wanted to go.

