CCUK
Free Flying
Sorry you lost the squab. Sometimes laying hens produce eggs that are too hard for chicks to hatch from. Sometimes it can be from too much calcium prior to egg laying and sometimes it can be a genetic issue. People love hard egg shells but if it is genetic then it is not good for hatching eggs and it is recommended that the chicken isn't used for hatching eggs because if high mortality rates. I'm not sure that this can also be the case with pigeons but the same as we add water to an incubator a bird will normally create adequate humidity for the chick to hatch.I lost one squab hatchling to humidity. I had been only providing baths once a week on average to my nesting pairs. One squab was lost due to the fact he was unable to emerge from the shell and membrane of the eggs. It is possible humidity may have been the cause (not 100% certain.) It was able to pip the shell but that is far as it got even with some assistance from your truly.