As a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.There are as many as 80 types of autoimmune diseases.s a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.
The diet of pelicans usually consists of fish, which can be up to 30 cm (1 ft) long, but amphibians, turtles, crustaceans and occasionally birds are also eaten. Aquatic prey is most commonly taken at or near the water surface.
Brown pelicans lay 1 to 4 eggs that are white like chalk and textured. Adults lay 3 eggs per season and younger brown pelicans don't lay more than 2 eggs. They use their webbed feet to keep the eggs warm for 29 to 32 days. Not all of the eggs actually hatch, but about 7 in 10 do. The chicks have a special tooth on the tip of their beak which they use to break open the shell. It takes 31 hours after the first peck for the eggs to hatch. When they are born, brown pelican chicks weigh 54.9 to 87 grams and 73.5 grams on average.