This is outside my realm of solid understanding but I've always understood that there has been some speculation within the scientific community that birds (waterfowl) have played a role in the transport of fish eggs to land-locked water bodies that either have no outlet, or have a fish barrier on the outlet (i.e., a waterfall too tall to swim up). For years, the assumption was that eggs would become lodged in the feathers or on the feet of a bird when it landed on a water body where the eggs had been laid, then transported to the isolated water body when the bird relocated to that pond/lake.
More recently, however, there's been an increased focus on looking instead at waterfowl digestive systems as the mode of transport- i.e., the bird eats a fish egg whole while on the waterbody where that egg was laid, then relocates to the isolated water body and poops the egg out, still whole and alive.
A google search brings up no shortage of articles on the subject, with varying levels of support for or against the idea that waterfowl is somehow involved.
More recently, however, there's been an increased focus on looking instead at waterfowl digestive systems as the mode of transport- i.e., the bird eats a fish egg whole while on the waterbody where that egg was laid, then relocates to the isolated water body and poops the egg out, still whole and alive.
A google search brings up no shortage of articles on the subject, with varying levels of support for or against the idea that waterfowl is somehow involved.
Comment