Law of nature - starring: Jealous Guys

Now, in the breeding season House Sparrows guys are prone to fights. It is easy to perceive they have in flocks a pecking order. Male with large patches of black seems to be older and dominant over male with less black.
On the other hand, when the male finds food immediately is calling the rest of the flock.
"My" Sparrows for years have reused the same nest on my spruce and they are close to my heart.