Which type of an atomic structure our bird wings and butterfly wings when compared to each other?

The wings of birds and wings of a butterfly, when compared to each other, can be illustrated as analogous structures.  

In animals, analogous structures refer to those body compositions that are used to do identical activities, however, exhibit distinct evolutionary history. They are also known as convergent structures. The formation of these structures takes place as an outcome of the requirement for the animals to amend with the environmental conditions. For example, both the butterfly and bird use their wings for flying.  

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.