
Bird Cage Size Guide: Minimums by Species
Width beats height, bar spacing is a safety issue rather than a preference, and the 'minimum' on the box is usually a sleeping cage.
7 min read
Keeps the husks in the cage, not on the carpet.
Seed husks travel much further than new owners expect. A mesh skirt catches most of it at the cage rather than letting it reach the carpet two metres away.
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Colour: Black
Size: Small
Why you'll love it
A budgie can throw husk a metre. The mess, not the bird, is usually what wears people down, and a skirt fixes it for the price of one bag of seed.
The bird still needs light and airflow, and it still wants to see the room. Solid covers are for night; mesh is what you leave on all day.
Sizing is by cage circumference. Take a tape round the widest point and size up if you are between, because a skirt stretched tight tears at the seam.
Good fit if
Look elsewhere if
A seed-eating bird cracks the shell, takes the kernel and flicks the husk aside, and it does that hundreds of times a day. The flick is quick and the husks are light, so they leave the cage between the bars and carry a surprising distance before landing.
Add down feathers and dropped seed and the area round a cage needs daily attention. That is not a sign of a badly kept bird; it is what seed eating produces. Catching it at the source is far more effective than trying to keep up with it on the floor.
Elastic at both edges is what lets one cover suit round and square cages, but it needs to sit at the right height to work. Position the top edge above the level the birds feed at, since husks flicked from a perch above the mesh sail straight over it.
Measure the cage circumference at its widest point before ordering. A cover stretched to its limit loses grip and slides down over a few days, and one much too large bunches and gapes. Check it after a week, as it settles once the elastic has relaxed.
A guard catches what escapes; it does not reduce what is produced. An enclosed feed box, where the bird eats inside a housing rather than at an open dish, cuts the amount being flicked in the first place, and the two together are considerably more effective than either alone.
Do not use it as a night cover. A seed guard is designed to breathe and to sit round the lower cage; night covers cover the top and sides and are cut to block light while allowing airflow. Using one for the other gets both jobs wrong.
A mat under the cage is the third layer, and the cheapest. A washable mat or a sheet of hardboard extending a foot beyond the cage on every side catches whatever gets past the mesh, and sweeping it is considerably quicker than working husks out of carpet pile with a vacuum.
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The details
| Size | Suits | Notes |
|---|---|---|
| Small | Budgie and finch cages | Round or square, up to about 40 cm across |
| Medium | Cockatiel cages | The most common size for a single bird |
| Large | Parrot and flight cages | Check the circumference at the widest point |
Measure the circumference at the widest part of the cage rather than the width. A cover stretched to its limit loses grip and slides down within days.
Shake it out over a bin weekly, which takes seconds and does most of the work. Machine wash it cool every few weeks and air dry, since a hot wash or a tumble dryer will slacken the elastic and a slack cover no longer grips the cage.
Check for holes at the same time. A small tear grows quickly under tension, and a bird that has found a loose thread will pull at it. Having a second cover means the cage is never uncovered while one is drying.
Good questions
Measure the circumference at the widest point, not the height. These stretch a long way but a skirt pulled taut splits at the seam within weeks.
Most of it, not all. Anything thrown upward still clears the top, and a determined cockatiel will find a way. Expect a large reduction rather than a clean floor.
No. It is mesh, and it does not darken the cage. For sleep you want a solid cover; this stays on during the day.
Measure the circumference at the widest point rather than the width, and check it against the size guide. The elastic accommodates round and square cages within its range.
No, it catches most of what is flicked at and below the mesh level. Husks thrown from a perch above the top edge still escape, so set the height above where the birds feed.
No. It is designed to breathe and to sit round the lower cage. A night cover blocks light over the top and sides while allowing airflow, which is a different item.
Last reviewed 30 August 2026
Advice

Width beats height, bar spacing is a safety issue rather than a preference, and the 'minimum' on the box is usually a sleeping cage.
7 min read