There about 17 senses so far discovered by the scientific community, and up to about 30 that are currently being investigated by the same. Most all of them are unconsious. Your body has millions of different receptors for just about everything you can imagine; Pressure of all kinds, electromagnetic frequencies, sexual receptivty, motives, emotions(Yes, due to their biological partnerships), balance, motion outside the body, just about any kind of wave mechanical or energetic, heat outside the body, receptors that identify positive and negatively charged particles at the atomic level, gravitational changes and lunar rhythms, radiation sensing(all types),....etc
Ingo Swann gave a presentation on some of this to the United Nations awhile back, it was pretty interesting, except that he was giving it all a psychic slant to promote himself. If you can find it, read it. But you can find most of this in neurology and biology journals and texts.
Oh yeah, and humans have that electromagnetic sense, too, not just birds. We grow biologically synthesized magnetite crystals behind one of our sinusoidal bones. Used the same way animals use it, just not consciously.