I suspect they're training on this.
I asked Opus 4.6 for a pelican riding a recumbent bicycle and got this.
Interesting that it seems better. Maybe something about adding a highly specific yet unusual qualifier focusing attention?
perhaps try a penny farthing?
It would be way way better if they were benchmaxxing this. The pelican in the image (both images) has arms. Pelicans don't have arms, and a pelican riding a bike would use it's wings.