First Double on Beaver in a 12x18x39 Comstock Swim Through Beaver Trap

Local hunter and only recently turned "trapper" Carl has been catching beaver in his Comstock trap for the past two years to keep the flooding down on his property.  Using both channel and dam break sets, Carl has been accustomed to catching pretty much at will, expecting to catch every time he sets the trap, which is pretty much how it has gone.  One night last week he called and said though he knew there were beaver present, he had not caught a beaver that day.  He thought it was unusual not to catch a beaver virtually each time, but actually it is quite common place not to catch every day for sure.  Blank days can be expected, even with great sets coupled with a great trap.  Having caught a number of beaver in the short time he had been using he traps, I guess he had gotten a bit spoiled.
A couple of days passed when I got another call from Carl, this time really excited.  He had caught 2 two year old beaver in his cage, both about 25-30 pounds, a pair of two year olds.  These beaver had evidently entered the cage at the exact same time, captured together.  This was a first for a double beaver catch in a 12x18x39 Comstock Cage.