what has he said about the human soul?
The human soul incorporates the powers of the other kinds: Like the vegetative soul it can grow and nourish itself.
Aristotle
Aristotle's psychology, given in his treatise "On the Soul" ("peri psychēs"), posits three kinds of soul ("psyches"): the vegetative soul, the sensitive soul, and the rational soul. Humans have a rational soul. The human soul incorporates the powers of the other kinds: Like the vegetative soul it can grow and nourish itself; like the sensitive soul it can experience sensations and move locally. 
where do birds go when they fly south The southern oceans. what is this phenomenon called? It is the regular seasonal movement, often north and south along a flyway, between breeding and wintering grounds. do changes in climate affect this migration? Yes, large scale climatic changes are expected to have an effect on the timing of migration. are there any scientists who observed or studied this phenomenon? Yes, Johannes Leche. historically, what were some of the views on this phenomenon? Aristotle noted that cranes traveled from the steppes of Scythia to marshes at the headwaters of the Nile. who is this person mentioned here? A Greek philosopher and polymath during the Classical period in Ancient Greece.
wiki:1545462
Aristotle [SEP] Soul
Aristotle's psychology, given in his treatise "On the Soul" ("peri psychēs"), posits three kinds of soul ("psyches"): the vegetative soul, the sensitive soul, and the rational soul. Humans have a rational soul. The human soul incorporates the powers of the other kinds: Like the vegetative soul it can grow and nourish itself; like the sensitive soul it can experience sensations and move locally. The unique part of the human, rational soul is its ability to receive forms of other things and to compare them using the "nous" (intellect) and "logos" (reason). For Aristotle, the soul is the form of a living being.