That’s not what anecdotal means. There was no evidence in the research paper that they where feeding ‘shortly’; although to be fair ‘shortly’ sounds like a mistranslation, can you explain what you mean.Did you mean anecdotal?
Why do you say that? This research was based on observation using trackers, previous research was only done using surface observation and so was limited and appears to have been wrong..
Because they are feeding very shortly.