Generally, for egg binding, the calcium uptake needs to be increased. Short-term, that could mean dissolving a 250 mg calcium citrate tablet, and giving half that twice a day for a couple of days, then adding 50 to 100 (I often go with 80) mg calcium citrate extra per day. This is in addition to layer feed and free choice oyster shell.
A nice long float in lukewarm water (80F or so) - for about an hour - sometimes helps them relax and let go of the egg.
There are times when it's more complicated - not just one egg, or due to oviduct problems. Then help is needed from a vet or someone with some really good skills and experience.
Also, when a duck seems off, it could mean there is a systemic infection - and that needs to be treated right away.
A nice long float in lukewarm water (80F or so) - for about an hour - sometimes helps them relax and let go of the egg.
There are times when it's more complicated - not just one egg, or due to oviduct problems. Then help is needed from a vet or someone with some really good skills and experience.
Also, when a duck seems off, it could mean there is a systemic infection - and that needs to be treated right away.