Feeding a Cross Beaked Hen?
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I think it is highly situational and will depend on each bird, but I have seem people who successfully offer moistened "normal" feed for their cross beaks. Either just softened with water before feeding time, or fermented feed. It will also depend on if you have other aggressive birds who would eat all the soft food before she can get her share.
Also, if you go with the wet food, you could do the calculating to decide how much powdered calcium to add each day.
Edited by paneubert - 5/5/16 at 10:00am
Does she attempt to eat crumbles? You could try to trick her by wetting/fermenting and then sprinkling with crumbles until she is used to eating fermented/wetted? Other than that, I got nothin'. Other than the idea to add powdered calcium to your egg, a strawberry, moistened croutons, etc.... meals.
Like paneubert said, it's highly situational. How extreme of measures do you want to go? Tube feeding?
We have had a couple cross-beaks and regardless of the types of feed and feeding methods we tried, both were undernourished and always at the feeder trying to eat. We didn't believe in tube feeding. In the end for both of them, we decided the most humane thing was to put them down. I think it depends a lot on the severity of the cross beak. In both our cases, the cross was mild at first, but as they grew older it got more and more pronounced. They were losing weight each day...slowly starving to death. It was sad to put them down but not as sad to seem them slowly starve to death.
There is quite the lengthy thread on BYC on cross-beaks, I think it is "diary of a cross-beak" or something like that.