I patterned the fly in the video on some originals - tied with Australian possum and lemon woodduck. This is the best known version.
However, Cal also tied the pattern using other feathers and dubbing. I do not know for certain, but to me it looks like it may be muskrat and English grouse.
A very nice treatment of a modern classic. A deadly pattern. Shop versions (still a very popular pattern in Northern CA) have a tendency to be over-dressed in my opinion, and Hans did a good job keeping the profile slim. I tend not to use a split-thread/dubbing loop method for the head, however, because I find more modestly dubbed versions of this fly to be more effective. From the photos, it does not look like Cal did either, but it is a common modification often seen in shop flies.
The advantage I find with the split thread I can create volume without the bulk. To get the same look by traditional dubbing, and then brushing out, a lot more dubbing would be used. In the water the fly as shown will be much sleeker than it looks in dry state.
The b nest is one of my staple flies on my trout waters. It works well for our tan caddis or the bigger( sz 14-12) crawler mayflies. I tie the fly a little sparser because much of our water tends to be on the slow side
Thanks for the video Hans. One of my favorite in the lakes in the Sierras. Haven’t tied using the split thread yet, but I like the look. May try that the next time I’m tying some up.
I tie a very loose interpretation of the Birds Nest for warm water. It is my go-to, and has caught everything from brookies to 3# largemouth. Mainly use it for bluegills!