Do parents tend to be more protective with girls than with boys?

We've started our research and i have observed the following activities:

I recently moved to a new apartment complex where I observed many kids coming out from my next door neighbor's apartment. I paid close attention and noticed that there are about 4 families living in the same home. In total, there are about 9 kids varying from ages 1 to 10. While observing their activities during the day, I noticed that the boys engaged in rough play outside with no adult supervision. I walked outside to the laundry room and noticed that they were hiding and pointing their index fingers at each other. "What are you guys playing?" I asked the boys. "We are playing guns!" a little boy said. I then watched them chase each other and pretend to shoot one another. "Play dead, play dead!", one of them yelled at another boy "I shot you, so you need to play dead!"

On a separate occasion the boys were kicking, using profanity, and throwing each other on the floor. I noticed that when the girls go out to play, the mothers are outside watching them if not through the kitchen window, they are outside with the girls. The mothers also hang out outside when both the boys and the girls are outside. However, every time I see the boys playing outside without the girls, there are no parents outside supervising them.

-Nalleli Garrido