One of my budgies, Lily has a chronic weakened leg. She gets around very well in a large cage (100cm x 120cm x 80cm) with three other budgies using her beak, working leg and wings. She appreciates a thick natural wood perch and platform perches but chooses to sleep on a swing with natural wood perch which she shares with her pal Neville. The bird room has several cages and when out for exercise she can climb every one. Only time she gets in difficulty is if she ends up on the floor, there is a ladder positioned for her use but she usually fly hops to me for a lift. How do you provide perches for a bird in what is described as a “glass aquarium with a screen top”?