The explanation of druid wildshape shows that the druid while whildshaped retains its intelligence wisdom and charisma modifier. And gains additional abilities given by the animal.
Now keeping the wisdom modifier means that you also keep your standard perception. However some monsters also have an ability to increase perception. - For example the giant elk has a "+4 to perception".
Now my druid also has proficiency in perception, and with 20 wisdom that normally means I have +8 to perception checks.
As I gain the skill from the giant elk would this mean I have a massive +12 to perception while in giant elk form?