These perches are made from natural growing Manzanita wood, and shapes will vary from perch to perch. Each perch is made based on the width of the branches and cut to an average length, giving them a distinct small, medium, and large size. 
 
 
 
The average length of these perches is around 18".
 
 
 
Sandblasted Manzanita perches have had the bark stripped off. This gives your bird an easier perch to grip on to, and is best for very young or very old birds. However any size appropriate bird can use these perches.