The lack of albinos is an interesting topic for the people who have been around the industry for many years.
There are 3 reasons why non are there
1. just no one has ever seen one.
2. every one gets eaten.
3. none or very few hets were ever released.
1 and 2 seem very unlikely unless it is a combo of both very few make it and those have not been seen yet??
3 seems unlikely if it was many releases over time. Unless a large group of newely imported wild berms let go or escaped in one event.
This is not arguing a point if it was solved it could help shed light on how they got there.
Rob