Question

To have a chance to observe wildlife во времени present progressive

Answer 1

To have a chance to observe wildlife - иметь возможность наблюдать за дикой природой. Глагол have тут в значении "обладать" и не употребляется в progressive.  Нужно заменить на simple, например, She has a chance to observe wildlife.

Answer 2

To have a chance to observe wildlife in the present progressive tense, you can say:

"I am having a chance to observe wildlife."

This sentence implies that you are currently in a situation where you are getting the opportunity to observe wildlife.