Does the humming bird have a circulatory system?

Yes, the hummingbird has a circulatory system. It is a double circulatory system, which means that the blood passes through the heart twice during one complete circuit of the body. The hummingbird's heart is located in the center of its chest and is about the size of a pea. It beats at a rate of about 1,260 times per minute, which is the highest heart rate of any vertebrate animal. The blood is pumped from the heart through arteries to the body's tissues, where it delivers oxygen and nutrients and removes waste products. The blood then returns to the heart through veins.