I thought that you were going to say that the rooster got into the bag alone and pecked a nice chunk out of each apple. And if Trixie hadn't been invited, we can assume she planted that vindictive little seed of an idea in his head ;)
The boy is reading The Magic Tree House book on the Titanic. It mentions how some of the first class passengers had prize hens and roosters with them. That was unexpected, but interesting.
Ha ha! I kind of expected that more of the apples would have holes in them, but Bluey is a kind rooster and very respectful, so he only ate one.
That's sad about the chickens on the Titanic! I had never heard that either. Now I have to picture dead roosters at the bottom of the sea. I remember the Magic Tree House books from when my boy was that age. He loved them too.