Prepare to Participate in a Park BioBlitz

The National Park Service describes a BioBlitz as a short event where people find and identify as many species as possible within a defined area. Many park events now ask participants to help record biodiversity using iNaturalist, so preparing for one involves two jobs. You need to be in the right place, in the right role, at the right time. You also need to submit observations exactly the way the organizer expects. This guide covers both for a neighborhood or city park outing.

What your plan needs to accomplish

A workable plan does three things. It confirms your role as a participant or volunteer. It gets you ready for the organizer's field activities. It makes sure your observations reach the approved project. To get there, you decide which event to join, which role to take, how to get there and back, what to carry, and how and when you will submit records.

Much of the field detail arrives on the day. In the National Park Service's Heartland model, volunteers first attend an orientation and then receive instructions from a team leader on methods, recording, and equipment. Your preparation should therefore focus on two things: arriving in time for that briefing and already knowing how to use the recording tool. Joining an event does not give you permission to collect anything. At NPS sites, collecting specimens requires research permission. Treat any park as look-and-photograph only unless the operator explicitly authorizes collecting for your role.

Limits that shape the outing

Time: Events run in fixed windows, and the orientation usually comes first. If you arrive late, you may miss the method instructions. Set your arrival time by the briefing, not by the event's official start, and check whether you can stay for a full shift or survey.
Weather and timing: The National Weather Service recommends that outdoor events designate someone to monitor the weather and plan shelter decisions in advance. Small rain shelters do not protect against lightning. Outdoor activity should resume only after at least 30 minutes without thunder. Leave slack in your schedule for a pause or an early end.
After-dark sessions: Some bioblitzes include night surveys. Access rules, lighting, and methods for these sessions are set by each operator, so treat any night plan as unconfirmed until the organizer gives you the procedure.
Mobility: Survey areas and routes vary by park and by team. Ask which terrain and distances your group will cover. Also ask whether another role, such as a stationary task, is available if you need one. Do not assume it is.
Companions: Eligibility and supervision requirements come from the organizer, so confirm them for each person you bring. Anyone who will submit their own observations needs the app installed and practiced beforehand.
What you carry: Ask what equipment the team provides before you buy or pack anything. Keep your bag light enough to walk with. Bring your phone and a way to recharge it, plus whatever clothing and gear your leader confirms.
Connectivity: Parks can have weak signal. Riveredge Nature Center's 2025 iNaturalist instructions recommend saving observations offline and uploading them later.

Choosing how to take part

Approach	Fits when	Tradeoff	Confirm first
Join an observation group as a participant	It is your first BioBlitz or you want guidance on methods	You follow the group's route and pace	Registration, group assignment, briefing time
Accept a volunteer assignment	You want a defined job such as welcome desk or logistics support	Shift duties reduce your observing time	Duties, supervisor, shift times, handover
Contribute independently within the event area and window	Your schedule can't match group times	No leader guidance; whether your records count depends on the project setup	Whether the organizer accepts independent records, plus the project's place and date criteria

Volunteering at a BioBlitz is a different commitment from joining a survey group. If you take an assignment, write down your duties, your supervisor, your shift, and who takes over when you leave. For example, suppose you staff the welcome desk from 09:00 to 10:00, hand it back to the coordinator, and then join your assigned observation group. In that case, your arrival time, transport, and packing all follow the desk shift, not the survey schedule. This schedule is an illustration only. Your organizer sets the real one.

The independent approach depends on how the iNaturalist project is built. A Collection project automatically shows any observation that matches its configured criteria, such as place, dates, or taxa. A traditional project requires you to join it and add observations manually. Find out which type your event uses before relying on records made outside a group.

Planning sequence

1. Identify the event and its organizer. From official event information, record the date, start time, and whether registration is required.
2. Confirm eligibility and register yourself and any companions. Everything after this step depends on having a confirmed place.
3. Choose your role. If you are volunteering, get your duties, supervisor, shift, and handover in a message you can refer back to.
4. Confirm the meeting point and briefing time. Then plan your trip there and back around them, and around your shift end time if you have one.
5. Get the submission details: the approved platform, the project link, its place and date criteria, any required fields, and who reviews submissions. If the project is traditional, join it now.
6. Install the app and follow the instructions for your version. iNaturalist's directions differ between Android, iNaturalist Classic, and the newer iPhone app. Practice making an observation of a wild organism near home and finding it again afterward. Riveredge's 2025 bioblitz instructions also recommend practicing beforehand.
7. Review your sharing settings (see the privacy section below) alongside any sharing instructions from the organizer.
8. Read the event's rules and guidelines. Ask the operator about permitted routes, interacting with wildlife, collecting, and nighttime access. Note down only the methods authorized for your role.
9. Pack the clothing and equipment your leader confirms. Note the weather cancellation channel and the actual shelter destination.
10. On the day, arrive in time for orientation and follow the team leader's instructions on methods and recording.

Recording observations in the field

An iNaturalist observation records one encounter with one organism at a particular time and place. If you photograph a bee on a flower, the bee and the flower are separate observations. For each one, follow these steps:

Add photos or a sound recording as evidence.
Check that the date and location match where and when you actually saw the organism.
Choose an identification, even a broad one such as "plants" or "insects."
Mark the subject as captive or cultivated if it is planted or kept, such as landscaped park trees, garden beds, or pets.
Save the observation, then upload or sync it. If you have no signal, keep it saved offline and upload it later.

To count as verifiable, a record needs an accurate date and location, photo or sound evidence, and a wild subject that isn't human. Verifiable records generally start as Needs ID. Their status can change as the community reviews them. Research Grade usually requires more than two-thirds of identifiers to agree at the species level, though iNaturalist documents some exceptions. A clear photo and an honest broad identification are more useful than a confident guess.

If you join a night session

Some events add an after-dark survey. Before planning to participate in a bioblitz at night, get the organizer's approved procedure for that session: the meeting point, permitted routes, lighting, methods, and when the session ends. Then check that your trip home works at that hour. Without that procedure, treat the night session as unconfirmed rather than building your plan around it.

Privacy and sharing

iNaturalist observations are public. You can set geoprivacy to hide exact coordinates, and the platform automatically obscures locations for some sensitive taxa. Your trust settings can still share hidden coordinates with specific projects or people. Photos, descriptions, and your nearby observations can also give away a location. Check your settings, your observation and image licenses, and your project trust choices against the organizer's sharing instructions before the event.

After the event

Upload any observations still saved offline before the organizer's submission deadline. Ask the organizer for that date, because it varies by event. In a Collection project, use the View Yours button to check which of your records qualified. New observations can take a few minutes to appear. If a record is missing, compare its date, location, and evidence with the project criteria. Afterward, reply to questions from reviewers or identifiers on your observations.

Details to confirm before relying on the plan

Detail	How it affects your plan	Confirm with
Registration and eligibility	Determines whether you and each companion can take part	Organizer
Meeting point and briefing time	Sets your arrival time and travel plan	Organizer
Transport on the event day and time	Weekend or evening service may not match your shift or a night session	Your transit provider or route planner
Route terrain and accessible facilities	Determines whether a role or survey area suits your needs	Organizer or park operator
Provided versus personal equipment	Changes what you buy and carry	Team leader
App version, project link, and project type	Determines whether your observations count automatically	Organizer and the app's own instructions
Submission deadline and review contact	Sets your upload and follow-up timeline	Organizer
Weather monitoring, cancellation channel, and shelter	Decides whether and where you wait out a storm	Organizer
Collecting, handling, and night access rules	Limits which methods you may use	Park operator

Adjusting if conditions change

Thunder or lightning: Follow the designated weather decision. Move to the actual shelter, not a small rain shelter. Return only after 30 minutes without thunder. If the event is cancelled or rescheduled, recheck your role, briefing time, and transport for the new date.
No signal or a low battery: Save observations offline and upload them later. Use your charger between sessions rather than skipping records.
Your shift or assignment changes: Write down the new duties and handover, then move your arrival and departure times to match.
You can't make the group times: Switch to contributing independently only after confirming that the organizer accepts it and that your records will fit the project's place and date criteria.
A night session becomes unworkable: Ask whether a daytime slot or other role is open. Don't assume one will be.
You find a sensitive species: Check how its location is displayed, and follow any obscuring instructions from the organizer.