Sustainably sourced Australian native perches. All perches can be easily attached and removed by hand with the wing nut assembly. Great for easy cleaning, maintenance and repositioning. Perches are sold individually; pictures are for reference only. Small - Suitable for Cockatiels, Conures, Lorikeets, Quakers, Ringnecks, Caique. (Budgie thickness make a request) Approx 40cm long x 2.5cm thick. Large - Alexandrines, Eclectus, Galahs, Amazons, African-Grey (Macaw thickness make a request) Most large-sized perches are the straight type. Approx 40cm long x 3.5cm thick. Every perch is unique in shape, bark and thickness. If you have a special request or question, please don't hesitate to ask. Some perches may have rough or smooth bark. Not sure how many branches a cage needs or where the thickest ones should go? We cover the whole setup in Which Perches Should You Put in a Bird Cage?