1. Western jackdaw is not a protected animal. Western jackdaw with red mouth is widely distributed in China, with rich population. It is not close to the critical value standard for the survival of vulnerable and endangered species (the distribution area or fluctuation range is less than 20,000 square kilometers, the habitat quality, population size and distribution area are fragmented), and the population trend is stable, so it is evaluated as a species without survival crisis.

2. According to Liu et al.' s statistics on the number of red-billed jackdaws in Pangquangou Nature Reserve in Shanxi from April to September, 1983- 1984 and 1986, the average encounter rate is 5.8 birds every 2 kilometers, and the number is relatively stable.

3. Western jackdaw with red beak, a genus of passeriformes, commonly known as Wu Shan, Laoman with red beak, Western jackdaw with red beak, Western jackdaw with long beak, etc. The whole body is black, and like crows in general, the bright red mouth is long and curved. This cry is a rough and sharp Kierkegaard sound. Red-billed Jay is monogamous and has the habit of returning to the original place (usually caves or cracks on cliffs) to breed.