Berau bird is a relatively common bird in China, it is a carnivore, the size is not large, but the temperament is very fierce, they often build the nest on the dense branches of the leaves, when they are young, they can often hear their calls, especially in the breeding season, once someone is close to the tree, the adult Berau bird will quack and quack non-stop, so it is also called "Gaga bird", sometimes it is called annoyed, just find a few small partners on the tree to end the bird's nest, a person divides a small bird to raise, the Burrow bird does not have a temper like a sparrow, Sparrows are usually unsupportable, and when caught, they often do not eat or drink, either release it or go on hunger strike. Berau birds are different, as long as there is food, they can grow up, and adult birds will not abandon the birds, they will still come to feed the young birds, and when the young birds grow up, and then release, it can still fly freely.
The Berlau bird has a special skill, that is, it has the habit of storing food, the Berlau bird is very industrious, almost always on the way to prey, especially during the breeding of offspring, the Berau bird is even more busy, in the branches around their nest can often see a lot of small animals hanging, these are their food reserves, when there is not enough food or bad weather will eat. This is a very practical skill, but also because of this, it is considered that the Berlau bird is a cruel bird known as the butcher bird.
事实上，伯劳鸟之所以有这样的习惯，是有其特殊的原因的。
一是为了方便食用。 伯劳鸟因为力量有限，无法分割食物，它们将获取的食物挂在树上，既能利用树枝分割大块食物，同时还有利于减少寻觅食物的能量消耗，是一种很好的生存策略。
The second is the structure of the Burrow bird itself, the Berlau bird belongs to a transitional species of the passerine that evolved to the Falcon order, belongs to the passerine but does not have a sac that stores food, and the beak is a pure carnivore like the digestive system and the falcon. However, its size and strength deficiencies make it unable to eat larger prey, nor can it cut on its own, and can only use branches as tools.
三是伯劳鸟没有嗉囊，与其他雀形不同，所以不能在体内食物储存食物，加上伯劳鸟主要以肉食为主，就意味着其食物消化很快，更容易饿，需要不停的寻找食物，同时为了备不时之需，它们开发出了食物存储的技能。
四，作为求偶的礼物，给配偶或者其他雌鸟的礼物。 雄性伯劳鸟有更多的时间去捕猎，因此占据了更好的地位，饱暖思那啥，有的伯劳鸟会以此作为交换，换取其他雌鸟的亲昵。
当然，这种行为不单单是伯劳鸟具备，其他鸟类也是一样的，根据科学研究显示，鸟类世界的婚外配情况非常普遍，婚外配指的是已经配对的雌鸟或者雄鸟与它们配偶之外的个体发生交配的行为。 A survey of more than 150 species of birds found that this was the case in more than 80% of birds (Griffithet al., 2002).
如图，雄性灰伯劳鸟给雌性送礼，并以此获得婚外配的机会。 这在鸟类世界里不是个例。
那么，伯劳鸟有哪些悬挂食物的习惯呢？ 我们来看一下，就会发现伯劳鸟的食谱非常广泛，几乎是无所不食用。
lizard
mouse
grasshopper
frog
dove
Small fish
snake
Base shrimp
vermin
insect
mantis
Shellfish
kingfisher
birdie
Birds such as sparrows, as well as the young birds of other birds, are vulnerable to attacks by birds of Berlau as they learn to fly.
The special body structure and unique living habits make the Berau bird make the behavior of adapting to the natural environment, and the survival of the fittest is a natural selection, and the Burlau bird is a successful bird.