although it has been very rare. I remember one male, a beautiful bubblegum snow, that sired only slugs no matter which female he bred. And a really nice creamsicle female that never produced a good egg with 3 different males. There was one other female that never produced - I believe it was an alb. okeetee. But I never personally had a sterile blood, although I certainly believe they exist.

Even way back in the '80s, when I got my original bloodreds from Eddie Leach, I didn't find fertility issues with the line I worked with. But they did tend to produce huge clutches of tiny eggs that hatched into tiny snakes that were difficult to get started. That was a hallmark of the morph for many years in my collection, until they were sufficiently outcrossed with other colors / morphs so that their eggs and babies became just like any other corns. The one exception was my pewter line - even the bigger babies were often problematical feeders. I finally let that line die out and have infused charcoal blood from other lines into my bloods.

I think every long time breeder will know the pros and cons of their own lines, no matter what the morph, or even the species.

Once a morph has been around long enough for lots of breeders to "improve" their own lines to their liking, I doubt that it will be easy to make any generalization cover all (or most) of the various bloodlines being worked on by all of the US breeders, let alone breeders all over the world. That is, except for some positive points that most breeders would agree upon as being a desirable outcome to strive for, such as those concerning generally accepted morph appearance, good health, easy feeding, etc.

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