Yes, wildlife biology is a competitive career field - I've worked as a wildlife biologist for over 30 years. So focus on what will make you better qualified than other candidates with a bachelors degree. As another person said, a second major in a related field can make you more competitive - education, journalism, GIS/mapping, even business, veterinary medicine, genetics. Those kinds of majors will give you skills that can be used in wildlife biology, but which aren't often taught as part of a wildlife degree.
I'd discourage the idea of getting a completely different 2d degree - while a 2d degree may cover more employment options, it won't make you more competitive in your preferred field, in fact it may confuse employers. Plus the time and effort you put into a 2d degree could have been spent getting more skills in wildlife biology. Also consider what other things you can do be more competitive - like getting job experience.
Wildlife biology is competitive enough that having a BS degree and no experience isn't enough to make you stand out from the crowd. But a little experience, like volunteer work, summer seasonal work, etc. adds a lot - not only does it give you experience, it also shows you have a work ethic AND it gives you a reference who can recommend you and vouch for you. That's what will get the attention of the hiring supervisor.
And a wildlife biology degree can qualify your for other entry-level biologist jobs, like medical labs, teaching science, etc.
John recommends the following next steps:
- Look at current job postings to see what skill sets employers are looking for. That may give you an idea of what else to study in college.
- Meet a wildlife biologist to learn about their job and what they did that qualified them.
- Look for volunteer, part-time or seasonal jobs related to your preferred field. That will give you experience and connections that other applicants won't have.