They are small, lively and very noisy. They resemble their sisters, the house sparrows in size but have a different color. They have a colored chestnut crown and nape, and a black patch on each pure white cheek. In some areas they are considered pests but I love them. I am talking about Eurasian tree sparrow.
It is a monogamous species. I read a funny fact about the males of this species. They are very jealous and if they suspect that their partner is cheating on him, he will behave very very ugly with its baby!
I have taken these picture as usually in Chindia Park.
Did you know that sparrows are monogamous?