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We are seeking an On-Call Biologist to support biological surveys, environmental assessments, and regulatory compliance activities across California. This flexible, field-based role is well suited to a biologist who can respond to short-notice assignments and work in a variety of habitats and weather conditions. Assignments may involve travel to project sites, including areas with limited public access or uneven terrain, and may require early starts, extended days, overnight stays, or occasional weekend work.

Responsibilities may include conducting surveys for sensitive plants, wildlife, nesting birds, bats, reptiles, amphibians, and other biological resources; documenting species observations and habitat conditions; assisting with pre-construction surveys, biological monitoring, and environmental clearance activities; and supporting compliance with applicable federal, state, and local regulations. You may also help identify and flag sensitive resources, monitor construction activities, collect field data using GPS and mobile applications, photograph site conditions, and prepare clear field notes, data summaries, and technical reports. The role may involve coordinating with project managers, engineers, contractors, agency representatives, landowners, and other field personnel while maintaining professional communication and sound ecological judgement.

A degree in biology, ecology, environmental science, natural resources, or a related discipline is preferred, along with relevant field experience in California. Knowledge of regional flora, fauna, habitats, and environmental regulations is highly desirable. Candidates should be comfortable working independently and as part of a team, interpreting technical guidance, following health and safety procedures, and meeting strict documentation deadlines. Strong observational, organisational, and written communication skills are required. Experience with GPS units, GIS applications, data-collection software, and standard field equipment is advantageous. A valid driver’s licence, reliable transportation, and the ability to travel throughout California are required. Availability, responsiveness, and willingness to accept assignments based on project needs are essential for success in this on-call position.

Fisheries Biologist (On-Call) provides biological expertise to support the assessment, conservation, and management of fish and aquatic resources. The role involves planning and conducting field investigations in rivers, lakes, wetlands, and coastal environments, often under varying weather and site conditions. Duties may include fish sampling, species identification, population surveys, habitat assessments, electrofishing, trap-netting, seining, environmental monitoring, and the collection of biological and water-quality data. The successful candidate will follow approved safety, animal-care, and sampling procedures while ensuring that field data are accurate, complete, and properly documented.

Responsibilities may also include entering, managing, and analysing field data; preparing technical summaries, maps, tables, and reports; reviewing scientific literature; and contributing to recommendations related to fisheries management, habitat protection, restoration, and regulatory compliance. The position may support environmental assessments, monitoring programs, stakeholder consultations, and collaborative projects with Indigenous communities, researchers, landowners, and other public agencies. As an on-call employee, availability may be required for short-notice assignments, seasonal surveys, extended field days, travel, and occasional evenings or weekends. Work may involve carrying equipment, walking long distances over uneven terrain, working from boats, and operating or assisting with vehicles and field instruments.

Applicants should have a degree or diploma in fisheries biology, aquatic ecology, environmental science, wildlife management, or a related discipline, along with relevant professional or field experience. Knowledge of fish biology, aquatic ecosystems, fisheries sampling methods, data-management practices, and applicable environmental legislation is preferred. Experience with geographic information systems, statistical or database software, and technical report writing will be considered an asset. The successful candidate will demonstrate sound judgement, careful attention to detail, strong communication skills, and the ability to work independently or as part of a multidisciplinary team. A valid driver’s licence, willingness to travel, and the ability to meet physical field-work requirements are required.

We are seeking an experienced and adaptable On-call Biologist to provide timely biological expertise across a range of operational, research, and field-based activities. This role is suited to a professional who can respond calmly to changing priorities, work independently when required, and maintain high standards of scientific accuracy, safety, and documentation. Availability for scheduled on-call periods, including occasional evenings, weekends, or public holidays, will be required.

Responsibilities will include supporting biological surveys, sampling programmes, monitoring activities, and investigations; identifying and recording biological specimens or environmental observations; collecting, handling, preserving, and transporting samples in accordance with approved procedures; and maintaining accurate field and laboratory records. You may also assist with data entry, quality assurance checks, technical reporting, preparation of equipment, and the interpretation of biological or ecological results. The role may involve responding to urgent requests, assessing situations in the field, escalating risks appropriately, and communicating clear updates to colleagues and relevant stakeholders. Compliance with health and safety, biosecurity, environmental, ethical, and regulatory requirements is essential.

Applicants should hold a degree or equivalent qualification in biology, ecology, environmental science, zoology, microbiology, or a related discipline, together with practical experience in biological sampling, laboratory work, field surveys, or a comparable setting. Knowledge of species identification, sample management, scientific data handling, and relevant legislation is desirable. You will need strong written and verbal communication skills, sound judgement, attention to detail, and the ability to prioritise tasks under pressure. A current driving licence and willingness to travel to varied locations may be required. Training and guidance will be provided where appropriate, but candidates must demonstrate initiative, reliability, professional integrity, and a commitment to maintaining accurate, evidence-based work.

We are seeking an experienced Wildlife Biologist to provide on-call, hourly support for wildlife surveys, monitoring, environmental compliance, and resource management projects across Southern and East-Central California. Assignments may vary in duration and location and may involve working independently or as part of a multidisciplinary field team. The successful candidate will be comfortable responding to short-notice requests and working in remote, rugged, and changing field conditions.

Responsibilities may include conducting wildlife and habitat surveys; identifying birds, mammals, reptiles, amphibians, and other sensitive species; documenting observations using established protocols; assisting with nesting bird, special-status species, and habitat assessments; monitoring construction or other field activities for compliance with environmental requirements; installing, checking, and maintaining wildlife detection equipment; collecting photographs, GPS points, and field data; and preparing clear field notes, daily reports, and technical summaries. The role may also involve communicating with project managers, agency representatives, contractors, landowners, and members of the public while maintaining a professional and safety-focused approach.

Applicants should have a degree in wildlife biology, ecology, natural resources, environmental science, or a related field, along with relevant professional or field experience. Strong species identification skills, familiarity with California wildlife and habitats, and the ability to accurately follow survey protocols are highly desirable. Candidates must be capable of hiking over uneven terrain, working in variable weather, carrying field equipment, and occasionally working early mornings, evenings, weekends, or overnight assignments. A valid driver’s licence, reliable transportation, safe driving record, and willingness to travel throughout the service area are required. Experience with GPS units, mobile data-collection platforms, mapping software, technical writing, or environmental permitting is an advantage. This hourly, on-call position offers flexible opportunities for qualified professionals who value field-based conservation work and can adapt quickly to changing project needs.

We are seeking an Associate Biologist On-Call to provide flexible biological support across field, laboratory, and operational activities. This role is well suited to an early-career professional who enjoys varied work, can respond to changing priorities, and is committed to producing accurate, reliable results. The successful candidate will work as part of a multidisciplinary team and may be required to accept short-notice assignments, including occasional evenings, weekends, or public holidays.

Duties may include assisting with biological surveys, environmental monitoring, specimen and sample collection, preparation and processing of materials, data entry, quality checks, and maintenance of accurate technical records. You may support field equipment preparation, follow approved sampling and health and safety procedures, identify or document biological specimens, and contribute to reports, databases, and routine laboratory activities. The role also involves maintaining clean and organised work areas, handling equipment responsibly, communicating findings clearly, and escalating unexpected results, hazards, or operational issues to the appropriate supervisor.

Applicants should have a degree, diploma, or equivalent practical training in biology, ecology, environmental science, zoology, microbiology, or a related discipline. Practical experience in fieldwork, laboratory procedures, biological identification, sample management, or environmental monitoring is desirable. You will need strong attention to detail, sound organisational skills, and the ability to work independently while following established methods and instructions. A dependable, adaptable approach and willingness to work outdoors or in laboratory environments are essential. The role may involve travel, manual handling, uneven terrain, and exposure to variable weather conditions, so applicants must be able to meet the relevant physical and safety requirements. A current driving licence, first-aid training, or experience with specialist recording and analytical tools may be advantageous.

We are seeking an experienced Senior Biologist to provide expert biological support on an on-call basis. The role will involve responding to urgent operational, environmental, or scientific requirements, assessing available information, and providing clear recommendations within agreed response times. You will work across a range of situations, coordinating with technical teams, field personnel, contractors, and relevant stakeholders to support safe, compliant, and scientifically robust outcomes.

Key responsibilities will include reviewing biological data and technical reports; undertaking or overseeing field assessments, surveys, sampling, and monitoring activities; identifying potential ecological risks; and advising on appropriate mitigation measures. You may be required to interpret legislation, permits, policies, and industry standards, prepare concise technical notes, and contribute to incident investigations or regulatory reporting. The role may also involve reviewing methodologies, quality-checking outputs, mentoring less experienced biologists, and maintaining accurate records of advice and decisions. Flexibility is essential, as on-call work may require availability outside standard hours and occasional travel to operational or field locations.

Applicants should hold a degree or equivalent qualification in biology, ecology, environmental science, or a related discipline, together with substantial professional experience in biological assessment or environmental consultancy. A strong understanding of relevant ecological principles, survey techniques, environmental legislation, and risk management is required. Experience working in regulated, industrial, infrastructure, conservation, or emergency-response environments would be advantageous. You will need excellent analytical, written, and verbal communication skills, sound professional judgment, and the ability to remain calm and decisive when working under time pressure. The successful candidate will be organised, collaborative, safety-conscious, and comfortable working independently while escalating issues appropriately. Current professional certifications, licences, or specialist species knowledge may be required depending on operational needs.

We are seeking an Associate Biologist On-Call to provide responsive biological support across field, laboratory and operational activities. This role is suited to an early-career biologist who can work flexibly, follow established procedures and respond effectively to changing priorities. You will contribute to the safe and reliable delivery of biological monitoring, sample collection, testing and data recording activities, often working independently while remaining connected to a wider technical team.

Key responsibilities will include carrying out scheduled and urgent field visits; collecting, labelling, transporting and processing biological samples; undertaking routine observations, measurements and basic analyses; maintaining accurate electronic and written records; and preparing clear summaries of findings. You may support ecological surveys, species identification, environmental monitoring, specimen handling, equipment checks and the preparation of materials for laboratory or field use. The role may involve responding to out-of-hours requests, travelling to different locations, working in variable weather conditions and undertaking physically demanding tasks such as walking over uneven ground or carrying equipment. You will be expected to follow health and safety, biosecurity, quality assurance and environmental protection requirements at all times.

Applicants should hold a degree or equivalent qualification in biology, ecology, environmental science or a related subject, together with practical experience gained through study, work or volunteering. Familiarity with biological sampling, fieldwork, laboratory practices, data management or relevant identification techniques would be advantageous. You should have strong attention to detail, good written and verbal communication skills, sound judgement and the ability to prioritise work under pressure. A willingness to work flexible hours, including evenings, weekends or short-notice call-outs, is essential. A current driving licence and the ability to travel independently may also be required. Training and support will be provided to help you develop your technical capability and confidence in the role.

We are seeking an on-call Wildlife Biologist to support environmental compliance, wildlife surveys, and biological resource management across the Los Angeles region and Central Valley. This role will involve fieldwork at a variety of project sites, including construction areas, transportation corridors, conservation lands, and other developed or undeveloped locations. The successful candidate will help identify sensitive biological resources, assess potential impacts, and provide practical recommendations to support regulatory compliance and responsible project delivery.

Key responsibilities may include conducting surveys for birds, mammals, reptiles, amphibians, plants, and other wildlife; monitoring construction activities for compliance with approved biological measures; implementing and documenting avoidance and minimisation procedures; performing pre-activity surveys and nest checks; recording observations using GPS and digital data-collection tools; preparing field notes, daily reports, technical memoranda, and permit-related documentation; and communicating findings clearly to project managers, contractors, agency representatives, and other stakeholders. The position may also support habitat assessments, species identification, wildlife handling or relocation under appropriate authorisation, environmental awareness briefings, and occasional evening, early morning, weekend, or overnight work.

Applicants should have a degree in biology, ecology, wildlife management, environmental science, or a related discipline, together with relevant professional or field experience. Knowledge of Southern and Central California ecosystems, protected species, nesting birds, wetland and riparian habitats, and applicable federal, state, and local environmental regulations is highly desirable. Strong field identification, technical writing, organisation, and communication skills are essential. Candidates must be comfortable working independently and as part of a multidisciplinary team in variable weather and terrain, sometimes for extended periods. A valid driver’s licence, reliable transportation, the ability to travel throughout assigned areas, and flexibility to accept short-notice assignments are required. Experience with GIS, GPS equipment, biological monitoring protocols, and environmental compliance documentation will be advantageous.

We are seeking a qualified and adaptable Project Biologist (On Call) to provide biological and environmental support across a range of field, laboratory, and project-based activities. This role is suited to a motivated professional who can respond to changing priorities, work independently, and contribute effectively as part of multidisciplinary teams. Assignments may vary in duration and location, with opportunities to support environmental assessments, ecological monitoring, research programs, regulatory submissions, and technical reporting.

Key responsibilities include planning and conducting biological surveys; collecting, handling, and documenting field samples; identifying flora, fauna, habitats, or other biological indicators; and maintaining accurate field notes, databases, and chain-of-custody records. You may assist with environmental impact assessments, species-at-risk surveys, habitat evaluations, restoration monitoring, and compliance inspections. The role may also involve reviewing technical information, preparing clear and concise reports, maps, and data summaries, supporting permit or regulatory requirements, and communicating findings to project managers, clients, regulators, and field personnel. All work must be completed in accordance with approved protocols, health and safety procedures, applicable legislation, and professional standards.

Applicants should have a degree, diploma, or equivalent education in biology, ecology, environmental science, or a related discipline, along with relevant field or project experience. Familiarity with biological survey methods, environmental regulations, data management, and technical writing is strongly preferred. Experience using GPS equipment, GIS software, spreadsheets, and standard field monitoring tools will be considered an asset. The successful candidate will demonstrate sound judgment, attention to detail, strong organizational and communication skills, and the ability to work safely in varied outdoor conditions. Availability for short-notice assignments, travel, early starts, occasional evenings or weekends, and physically demanding fieldwork may be required. A valid driver’s licence and the ability to obtain necessary safety certifications are also desirable.

We are seeking an experienced Senior Biologist On-Call to provide expert biological support across a range of operational, technical and field-based activities. This role will suit a highly capable professional who can respond effectively to changing priorities, assess biological risks and provide sound, evidence-based advice in time-sensitive situations. You will work closely with multidisciplinary teams, stakeholders and specialist contractors to support the safe, compliant and efficient delivery of environmental and biological programmes.

Key responsibilities will include coordinating and undertaking biological surveys, inspections, monitoring and assessments; reviewing technical data and preparing clear reports, recommendations and regulatory documentation; and providing specialist advice on matters such as protected species, habitats, biosecurity, ecological risk and mitigation. You will be expected to remain available for on-call duties, responding promptly to incidents, urgent requests and operational issues outside standard working hours when required. The role will also involve mentoring less experienced biologists, reviewing work for technical quality, contributing to procedures and risk assessments, and helping to improve field methods, data management and reporting standards.

Applicants should hold a relevant degree or equivalent professional experience in biology, ecology, environmental science or a related discipline, together with substantial practical experience in a biological or environmental role. Strong knowledge of relevant legislation, guidance and industry good practice is essential, as is the ability to interpret technical information and communicate it clearly to both specialist and non-specialist audiences. Experience of leading fieldwork, managing competing priorities and making sound decisions during high-pressure situations is highly desirable. You will need excellent organisational and problem-solving skills, attention to detail, and a flexible approach to working hours and locations. A full driving licence, willingness to travel and the ability to work safely in challenging field conditions may also be required.