An overwhelming number of research studies that examine non-human participants involve the use of

An overwhelming number of research studies that examine non-human participants involve the use of "rodents and birds."

Every year a large number of nonhuman animals suffer in biomedical trials over human medical advantages. Clinical morals request that nonhuman creatures are utilized as a part of the advancement of pharmaceuticals and immunizations. Nonhuman creatures are likewise utilized for basic biomedical research. Rats and mice include the larger part of all lab subjects utilized. 

Basically create a schedule on what you need to study and stick with it