Sometimes this is noticed during the breeding period — fortunately relatively rarely, but occasionally one hears it. If it is diagnosed in time, it can still be remedied, but you must intervene quickly. There are several causes, but if it occurs repeatedly in a certain flock, it is advisable to get rid of the doll. In any case, make a note of it in your breeding book. However, in most cases it can be prevented — especially when breeding canaries.
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