Meaning: This means that the cat directed its eyes away from the inside to see the birds.
Choice of Words: Looked means to direct one's eyes in order to see something. Out means away from the inside. Birds are warm-blooded vertebrates constituting the class Aves, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight skeleton.