These are very traditional areas of conservation. Managing the land or water for game species can be a very personally rewarding experience. Generally, starting pay is low. You may move up into management and supervise field crews and participate in planning activities. Talented biologists with good backgrounds in ecology and taxonomy ackgrounds are needed for management, for inventories, and communication.
Jobs are primarily in the public and nonprofit sectors.
Hang around for an advanced degree in particuolar group of organisms you like and become an expert. These latter two include regional state agencies, cities, counties, and special districts like zoning commissions or natural resource districts of various kinds. Working for the government can be a good thing. You get a lot of experience to make you more marketable in the private sector. But once in, pay increases are usually paltry unless you move up the ladder.