Borneo Bird Nest

The red or blood nest is the highest grade of its kind and has a bright red colour. It has been rated as the supreme delicacy rich in nutrition and the demand is high. Its rarity is due to less house have this kind of nest and the nest can only be harvested 1 to 2 times. Besides, it only shares about 5% of overall bird nest market. Therefore, the selling price is higher than others.

Some people believe that the bird's nests of reddish brown colour are produced by the mother birds who have to rebuild the nests for several times until their saliva becomes blood. Recently, many researchers have found that what causes the reddish brown colour is the chemical reaction among oxygen, iron and humidity which results in rust. Humidity also stimulates the rust to be absorbed into the nest making them reddish brown.