was his scientific style ?
Aristotle did not do experiments in the modern sense.Instead, he practiced a different style of science: systematically gathering data, discovering patterns common to whole groups of animals, and inferring possible causal explanations from these.
Aristotle
Aristotle did not do experiments in the modern sense. He used the ancient Greek term "pepeiramenoi" to mean observations, or at most investigative procedures like dissection. In "Generation of Animals", he finds a fertilized hen's egg of a suitable stage and opens it to see the embryo's heart beating inside.

Instead, he practiced a different style of science: systematically gathering data, discovering patterns common to whole groups of animals, and inferring possible causal explanations from these.
in the modern classification system birds are in a separate UNANSWERABLE what is taxonomy ? In biology, taxonomyis the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics. who developed it ? Carl Linnaeus. what are its applications ? The work conducted by taxonomists is essential for the study of biodiversity and the resulting field of conservation biology. how was it used during ancient times ? Organisms were first classified by Aristotle  during his stay on the Island of Lesbos. He classified beings by their parts, or in modern terms "attributes", such as having live birth, having four legs, laying eggs, having blood, or being warm-bodied. where was the above person born ? City of Stagira. did he hold any doctorate ? No, as he lived during the Classical period in Ancient Greece.
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Aristotle [SEP] Scientific style
In this sense, Aristotle's biology is scientific. From the data he collected and documented, Aristotle inferred quite a number of rules relating the life-history features of the live-bearing tetrapods (terrestrial placental mammals) that he studied. Among these correct predictions are the following. Brood size decreases with (adult) body mass, so that an elephant has fewer young (usually just one) per brood than a mouse. Lifespan increases with gestation period, and also with body mass, so that elephants live longer than mice, have a longer period of gestation, and are heavier. As a final example, fecundity decreases with lifespan, so long-lived kinds like elephants have fewer young in total than short-lived kinds like mice.