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.
It is not incorrect to say that bears are omnivores, or squirrels herbivores 6 oct 2015 grey squirrel a beautiful creature. 11 bushy tailed facts about eastern gray squirrels oxbow critical care for herbivores outdoors about carnivores, herbivores and omnivores. Herbivores like squirrels eat grass and small plants near the ground are called grazers.