Hawk, falco, Hyoko are masculine. Biyo is feminine, along with Palmon, the "type" of digi with the most "feminie" digimon tend to be plants, Rose, Ceres, Lotus, 3 plant megas right there, The only notable female bird megas are Hououmon and Ancient Irismon. So Mother nature, breath of life etc.... it makes sense Once upon a time fire was feminine it represented warmth and life, now its more masculine represneting destruction Wind/water is more feminine perhaps its due to how both water and wind an go from being gentle and calm, to a raging monster without any real warning. Wind seems feminized in almost anything that personifies it, while water seems more 50/50.
Just looking at only the mega levels, I'd say Plants have the most females. Banchou lily, Rose, Lotus, Ceres that makes 4. Angel Im just a little sad that we lack any fiery female digis, I was hoping the Olympos XII would give us a Hestia/Vestamon Goddess of the hearth. Instead the followed the more greek version giving us Bacchusmon(Dionysus) god of wine.