Amazing stuff!
"Mallard ducks that were fed fish eggs in the lab pooped out a few viable eggs. If fish eggs survive similarly in nature, this mechanism may contribute to the spread of invasive fish. ... It’s been an “open question for centuries how these isolated water bodies can be populated by fish ...This study shows one way that water birds may disperse fish"
Fish eggs can hatch after being eaten and pooped out by ducks | Science News In the lab, only a few carp eggs survived the dangerous trip through birds’ innards
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