"What is novel in the experiment presented here is that bees learned colour and pattern cues in a spatially complex scene composed of two-coloured local and global patterns. Coloured patterns at small and large spatial scales have been little studied, and hence our knowledge of how colourful patterns and scenes are perceived by insects is still scarce."
I am assuming that the above statements are true and the paper is novel. There are citations in the reviewers' comments indicating that the reviewers referred previous work in this area but still found the kids' research to be novel. Finally, even though the reviewers appreciate dthe fact that the paper was written by children and lacked advanced analysis, they didn't seem too biased. All this has made me less skeptical now.