Finding Eggs in the Field > Eggs on New Growth or on Healthy Host Plants

Female butterflies that fly in semi-arid regions of some species groups (depending upon their host plants) sometimes lay their eggs only on host plants with new growth.

Other females will seek out host plants that, for one reason or another, are healthier than other individual host plants. The reasons why these plants are healthier include the following:
  1. Plants are taking refuge under a shade source
  2. Plants are growing between rocks where the roots are healthier
  3. Plants have been naturally pruned by livestock creating healthier stalks when they grow back
  4. Plants are growing adjacent to a natural water source
  5. Plants respond to a wet winter