I've had CC recruitment in my main pond the last two years, in low numbers. But my LMB recruitment is absent. So the low LMB pressure may be why some survived. I have ledges, some cavity's, stumps and old tires so I think they were able to find nesting sites.
I watched CC eat LMB like candy. I can see I really need to make some videos and upload for people to see what I have observed. Maybe I can get time to get a frenzy going this weekend and get a few videos. You will be surprised at how close the shark comment is to the truth during a frenzy.