It’s not enough to say that it benefits their offspring. What is the exact mechanism by which they learned to carry out this process? In this case, the researchers are honest enough not to just start emitting Darwinblather. They admit we don’t really know.
If this report is a first, we might want to go a bit light on the traditional Darwinism while more bees are researched. If people used to think males wouldn’t do this, they will realize that one can be mistaken; those who rush in with an easy traditional answer might be too.
Researchers “established it contains four different types of egg shell, indicating that four types of animals all shared the same nesting site; extinct birds within a group known as enantiornithes, birds of undetermined classification, gecko-like lizards and smaller predecessors of today’s crocodiles.”