Out of my two cockatiels male and female, my male Ollie is very clingy when he is in his cage he will call and pace back and forth till he is let out and he always has to be on someone where as Georgie we have to force her out of her cage sometimes she would rather stick by her cage either being on it or in it, its funny because I was always told it was the female that was cuddly but in my house its my male who is the cuddle bug.