I've never seen a scientific study that shows birds carry eggs or fish from one BOW to another... Ya just never know though. In all likelihood its either accidental contamination, as in stocked fish contamination or bait bucket releases, or intentional as in malicious or not malicious bucket biologists...
I have stayed out of this discussion over the PB years because this subject may be controversial, but a geologist thinks in geologic time, not in the nanosecond of man’s existence on earth.
There are many diverse methods of life development and population growth that geologic history records in the rocks.
Personally, I don’t rule out this possibility as well as other “natural” methods.
If this subject is controversial, please moderate.
