2004). B-lymphocytes, the cells that produce antibodies, are initially produced in the embryonic liver, yolk sac and bone marrow, then move through the blood to the bursa of Fabricius (BF). Birds have a bursa of Fabricius (BF), which is an outpocketing of cloaca.
Most squirrels are vegetarians. There are a few exceptions like the flying squirrel. The flying squirrel will eat small birds, insects and definitely steal eggs from birds nest in order to make a meal. Generally speaking though, squirrels will mainly stick to things that are vegetarian related.
Dedicated to making the world a. better place one squirrel at a time. The answer to this question is, âit depends.â Obviously, presenting a captive diet that closely matches the wild diet in nutrition and form is the best strategy. Flying squirrels (Glaucomys), ground squirrels (marmotini) and tree squirrels (Sciurus) have some overlap in their diet, but generally eat different things.