ICF's Environment & Planning Division is seeking an experienced On-Call Field Biologist, who is authorized to survey for the Houston toad through a USFWS endangered and threatened species recovery permit, to join our Texas-based team. In this part-time role, you will conduct presence-absence surveys for the Houston toad and other species based on USFWS survey protocols, including night listening surveys as conditions warrant. You will also provide environmental monitoring services for construction projects to ensure compliance with applicable rules and regulations, analyze and compile field data to prepare reports and support project deliverables, collaborate with interdisciplinary teams of biologists and other technical staff to advance sustainable, efficient, and lasting infrastructure solutions for local, state, federal, and private clients, and communicate clearly with clients, project managers and field leads to deliver projects efficiently and ensure client success.