Avian Flu Regulations in New Hampshire Every Poultry Owner Must Know

Avian flu is one of the most serious threats facing poultry flocks in New England, and New Hampshire is no exception. Whether you keep a small backyard flock or operate a commercial poultry farm, the rules around detection, reporting, biosecurity, and quarantine apply to you — and non-compliance can carry significant consequences.

This guide walks you through every major aspect of avian flu regulations in New Hampshire, from understanding how the virus is classified to knowing exactly what happens if your flock tests positive. Use it as your go-to reference for staying compliant, protecting your birds, and navigating the state and federal systems that govern poultry health in the Granite State.

HPAI vs. LPAI: Understanding Avian Flu Classifications in New Hampshire

Before you can follow avian flu regulations effectively, you need to understand the two primary classifications of the virus and why they trigger very different responses from state and federal authorities.

Avian influenza (AI) viruses are classified as either low pathogenic or highly pathogenic based on their genetic features and the severity of the disease they cause in poultry. AI strains are divided into two groups based on their ability to produce disease. LPAI occurs naturally in wild birds and can spread to domestic birds, but in most cases it causes no signs of infection or only minor symptoms. These strains pose little significant threat to human health and are common in the U.S. and around the world.

HPAI is a far more dangerous classification. HPAI is often fatal in chickens and turkeys and spreads rapidly with a higher death rate in birds than LPAI. HPAI is rapidly fatal for poultry, with sudden onset and high death rates common among all poultry except ducks and geese. In chickens, HPAI signs often include respiratory and digestive symptoms followed by rapid death.

Avian-origin influenza viruses are broadly categorized based on two groups of proteins on the surface of the influenza A virus: hemagglutinin or “H” proteins (H1–H16) and neuraminidase or “N” proteins (N1–N9). Many different combinations of these proteins are possible, and each combination is considered a different subtype. The strains of greatest regulatory concern in the U.S. are the H5 and H7 subtypes.

Avian influenza of H5 and H7 subtypes are known as Notifiable Avian Influenza (NAI), and APHIS works to keep NAI from becoming established in U.S. poultry populations. This means both HPAI and certain LPAI strains — specifically those of the H5 or H7 subtype — are subject to mandatory reporting and regulatory action in New Hampshire.

The presence of low-pathogenicity virus can result in restrictions on exports and serious repercussions on the production economy, which is why regulatory agencies treat even LPAI H5/H7 detections with urgency. Understanding this distinction helps you recognize why the reporting obligations described later in this guide apply to more than just the most severe strains.

For more on related avian diseases that affect poultry health in New Hampshire, see our guides on avian tuberculosis and avian chlamydiosis.

Premises Registration Requirements for Poultry Owners in New Hampshire

Registering your premises is one of the foundational steps in New Hampshire’s poultry disease surveillance and response system. It allows state and federal officials to reach you quickly in the event of an outbreak near your location and ensures you are eligible for assistance programs if your flock is affected.

In New Hampshire, poultry premises registration is administered through the NH Department of Agriculture, Markets and Food (NHDAMF) Animal Industry Division, which serves as the state’s primary point of contact for poultry health matters. DAMF focuses on poultry health, biosecurity, and import requirements.

At the federal level, USDA APHIS operates the National Premises Identification System, which assigns a unique Premises Identification Number (PIN) to each agricultural operation. Registering with this system is strongly encouraged — and in some outbreak scenarios, required — because it integrates your flock into the national surveillance network that tracks HPAI detections. APHIS continues to work closely with state animal health officials on surveillance efforts to look for the virus in commercial, backyard, and wild birds.

For commercial poultry operations in New Hampshire, participation in the National Poultry Improvement Plan (NPIP) is the primary registration and certification framework. NPIP participation is required for interstate movement of poultry and hatching eggs and establishes baseline biosecurity and testing standards. The NHDAMF Animal Industry Division administers New Hampshire’s NPIP program and can provide enrollment guidance.

DAMF requires no statewide permit for backyard flocks but promotes biosecurity. However, registration is distinct from a permit — it is a data-sharing and surveillance tool, not a license to operate. You should contact the NHDAMF Animal Industry Division at (603) 271-2404 to confirm current registration requirements and procedures, as these can be updated during active outbreak periods.

If you import poultry into New Hampshire from another state, a Certificate of Veterinary Inspection (CVI) is required. A CVI is required for poultry imports. This document must be issued by a licensed, accredited veterinarian in the state of origin and confirms that the birds have been inspected and show no signs of disease.

Biosecurity Requirements for Commercial and Backyard Flocks in New Hampshire

Biosecurity is the single most effective tool you have against avian flu. In New Hampshire, biosecurity requirements vary based on flock type, but the underlying principles — limiting exposure, controlling movement, and maintaining sanitation — apply universally.

HPAI is a highly contagious virus that spreads easily among birds through direct contact with infected poultry, wild birds, contaminated equipment, and even on the clothing and shoes of caretakers. This transmission profile means that biosecurity must address people, equipment, and animals equally.

Core Biosecurity Practices for All Flock Owners

• Limit wild bird contact: Keep birds indoors or in fully enclosed outdoor spaces to limit contact between domestic and wild birds.
• Practice personal hygiene: Practice strict biosecurity measures, including washing hands before and after handling birds, wearing clean clothing, and sanitizing boots and equipment between coops.
• Quarantine new birds: Separate new or returning birds from your flock for at least 30 days.
• Avoid equipment sharing: Do not share equipment with neighbors.
• Eliminate standing water: Eliminating standing water and preventing domestic birds from having access to ponds, streams, and wetland areas that attract wild waterfowl is of critical importance.

Commercial Flock Biosecurity Standards

Commercial poultry operations in New Hampshire are expected to maintain biosecurity plans consistent with NPIP biosecurity standards. APHIS requires producers to provide, as a condition for receiving indemnity payments, a statement that at the time of HPAI detection on their premises, they had in place and were following a poultry biosecurity plan consistent with NPIP biosecurity standards.

This means your biosecurity plan is not just a best practice — it is a legal prerequisite for financial assistance if your flock is ever depopulated. Established and enforced biosecurity protocols will help prevent introduction of HPAI and other infectious agents.

Under federal rules updated as of December 31, 2024, commercial premises in control area buffer zones face additional requirements. Commercial poultry premises that were previously HPAI-infected must successfully pass a biosecurity audit prior to restocking to be eligible for indemnity. A biosecurity audit is also required for commercial poultry premises in the buffer zone prior to movement of poultry onto the premises.

For backyard flock owners, while formal biosecurity audits are not typically required, the NHDAMF strongly encourages following the USDA’s Defend the Flock program biosecurity guidelines, which provide species-specific recommendations for small and non-commercial flocks.

Reporting Sick or Dead Birds in New Hampshire

Timely reporting is one of your most critical legal obligations as a poultry owner in New Hampshire. HPAI is a reportable disease. Delays in reporting can allow the virus to spread to neighboring flocks, complicate your eligibility for compensation, and result in regulatory penalties.

What to Watch For

Knowing the clinical signs of HPAI helps you act quickly. If contracted by a bird, the virus is known to cause decreased appetite, reduced egg production, or death. More severe presentations include:

• Sudden, unexplained deaths across multiple birds
• Respiratory signs such as gasping and extreme diarrhea, followed by rapid death. Chickens may have swelling around the head, neck, and eyes, and the heads and legs may also have purple discoloration.
• Dramatic drops in egg production
• Neurological symptoms such as loss of coordination or tremors, particularly in turkeys

Who to Call in New Hampshire

If you observe signs consistent with avian flu in your flock, you have several reporting pathways:

• NH Department of Agriculture, Markets and Food (NHDAMF): The primary state contact for domestic poultry disease reports. Reach the Animal Industry Division at (603) 271-2404.
• USDA APHIS Veterinary Services: Call the national APHIS emergency line at 1-866-536-7593 (1-866-4US-DAIS).
• Your accredited veterinarian: Always report any signs of disease to your state agency or veterinarian.
• NH Fish and Game Department: For sick or dead wild birds, contact NH Fish and Game, which coordinates with USDA APHIS on wild bird surveillance. Samples in New Hampshire are taken as part of routine monitoring by NH Fish and Game and tested by the USDA Animal and Plant Health Inspection Service (APHIS).

For sick or dead domestic poultry, contact NHDAMF first. For wild birds showing signs of illness or found dead in unusual numbers, contact NH Fish and Game. Do not handle dead wild birds without protective equipment, and do not move carcasses before receiving guidance from officials.

If you have questions about other animal health regulations in the region, our article on horse boarding regulations in Wyoming and horse boarding regulations in Wisconsin cover how states approach livestock compliance more broadly.

New Hampshire’s Current HPAI Status and Active Outbreak Zones

Understanding the current disease landscape in New Hampshire helps you calibrate your biosecurity response and know when heightened precautions are warranted.

The virus has been detected in the New Hampshire wild bird population, according to the U.S. Department of Agriculture. Wild bird detections are particularly significant because migratory waterfowl serve as the primary reservoir and long-distance carrier of the virus. Wild birds can be infected with HPAI and show no signs of illness. They can carry the disease to new areas when migrating, potentially exposing domestic poultry to the virus.

In New Hampshire, the virus was most recently detected two years ago (as reported in February 2025) in three backyard flocks, but no commercial poultry operations were affected, according to the USDA website. The regional picture has remained active: four New England states reported HPAI cases in domesticated poultry in recent weeks as of early 2025, underscoring that the threat is ongoing across the region.

Detections are higher in the fall and spring, because wild birds continue to spread the virus as they migrate to their seasonal homes. This means New Hampshire poultry owners should treat the spring and fall migration windows as elevated-risk periods requiring the most stringent biosecurity practices.

When HPAI is confirmed on a premises, USDA APHIS and NHDAMF establish a Control Area around the infected site. This Control Area consists of two zones:

• Infected Zone (IZ): The area immediately surrounding the confirmed positive premises, typically a 3-kilometer radius. Movement of poultry, poultry products, and related materials out of this zone is prohibited without official authorization.
• Buffer Zone (BZ): A larger surveillance area, typically extending to a 10-kilometer radius from the infected premises. Enhanced monitoring and movement restrictions apply within this zone.

Zone boundaries are established on a case-by-case basis and can be adjusted as epidemiological information develops. Always verify current zone status with NHDAMF or USDA APHIS rather than relying on older maps or announcements.

Poultry Movement and Quarantine Restrictions in New Hampshire

Movement restrictions are one of the most operationally significant aspects of avian flu regulations for New Hampshire poultry owners. When HPAI is detected in your area, the ability to transport birds, eggs, equipment, and even vehicles can be severely curtailed.

Movement Restrictions During an Active Control Area

Once USDA APHIS and NHDAMF establish a Control Area in response to a confirmed HPAI detection, the following movement rules generally apply:

Indemnity payments are precluded for poultry moved onto premises in infected zones if the poultry become infected with HPAI within 14 days following the dissolution of the control area in which the infected zone is located. This rule is designed to prevent producers from moving birds into high-risk zones and then claiming compensation — so timing your restocking decisions carefully is essential.

Interstate Movement Requirements

Regardless of whether an active outbreak is occurring, all poultry moved into New Hampshire from another state must be accompanied by a Certificate of Veterinary Inspection (CVI). A CVI is required for poultry imports. For commercial shipments, NPIP certification and current AI-clean flock status are also required.

During an active outbreak, USDA APHIS may issue Federal Orders that impose additional interstate movement restrictions beyond New Hampshire’s standing requirements. These orders are published on the APHIS website and are legally binding on all producers.

Show Birds and Exhibition Poultry

If you exhibit poultry at fairs, shows, or swap meets in New Hampshire, additional precautions apply. During elevated HPAI risk periods, state and county agricultural fairs may cancel or modify poultry exhibitions at the direction of NHDAMF. Birds returning from exhibitions should be quarantined from your home flock for at least 30 days and monitored closely for signs of illness.

Flock Depopulation and Compensation Rules in New Hampshire

If HPAI is confirmed in your flock, depopulation — the humane destruction of all birds on the affected premises — is the standard response. Understanding the process and your compensation rights in advance can help you respond more effectively during what is inevitably a stressful situation.

The Depopulation Process

When HPAI is confirmed, USDA APHIS leads the depopulation response in coordination with NHDAMF. Speed is critical: the goals of HPAI response are to detect, control, and contain HPAI in poultry as quickly as possible; eradicate the HPAI virus using strategies to protect public health and the environment; and provide science- and risk-based approaches to facilitate continuity of business for non-infected animals.

In almost all cases, water-based foam, carbon dioxide, or alternative methods will be the depopulation methods available to rapidly eliminate the HPAI virus in poultry. Each premises is evaluated individually, considering epidemiological information, housing and environmental conditions, currently available resources and personnel, and other relevant factors.

Federal Indemnity Payments

USDA continues to indemnify producers whose flocks must be depopulated to control the further spread of HPAI. The indemnity process works as follows:

1. Report immediately — Contact NHDAMF and USDA APHIS as soon as you suspect HPAI. Remember that indemnity covers only live birds at the time of depopulation.
2. Complete the indemnity request form — Work with your case manager or Field Reimbursement Specialist to fill out and sign an indemnity request form. USDA will begin depopulation work and prepare the initial indemnity value.
3. Register with SAM — Register your business with the U.S. Government System for Award Management (SAM) to receive payment electronically.
4. Submit paperwork — Complete and sign the paperwork, including your bank information and SAM registration information, and return it to your case manager. You will receive payment from USDA via direct deposit in about 2–3 weeks.
5. Appeal if needed — If you appeal the initial indemnity value and your appeal is successful, additional funds would be deposited at a later time.

What Is Covered

APHIS offers two methods to reimburse producers for the depopulation and disposal of birds affected with HPAI — the Depopulation and Disposal (D&D) Flat Rate method or the Detailed Financial Plan method. In addition to the value of the birds themselves:

• USDA will also compensate you for materials, such as contaminated feed or egg packaging, that must be destroyed because they cannot be safely or adequately cleaned. Your Field Reimbursement Specialist must review and approve these items in writing before you remove or disassemble them.
• USDA pays flat rates for virus elimination activities, including barn preparation, a cleaning step, and a disinfection step. The amounts are calculated based on the area of the structures housing animals and eggs.

For valuation purposes, Title 9, Code of Federal Regulations (9 CFR), section 56.4(1)(a) governs the determination of indemnity and compensation amounts for the destruction and disposal of poultry and eggs infected with or exposed to H5/H7 avian influenza. If you believe the appraised value of your birds is incorrect, you have the right to appeal through the APHIS administrative process.

Penalties for Non-Compliance in New Hampshire

Failing to comply with avian flu regulations in New Hampshire — whether by not reporting a suspected infection, violating movement restrictions, or failing to maintain required biosecurity standards — can expose you to serious legal and financial consequences at both the state and federal levels.

State-Level Enforcement

The NHDAMF enforces New Hampshire’s animal disease statutes under RSA 436, which governs animal disease control and prevention. Under this authority, NHDAMF may:

• Issue quarantine orders restricting movement of birds, equipment, or vehicles from your premises
• Mandate testing and monitoring at your expense if you are suspected of harboring a reportable disease
• Pursue civil penalties for violations of quarantine orders or failure to report notifiable diseases
• Refer cases for criminal prosecution in cases of willful non-compliance or obstruction of disease control efforts

DAMF focuses on poultry health, biosecurity, and import requirements. Violations of CVI import requirements — such as bringing poultry into New Hampshire without proper documentation — are among the most common enforcement actions and can result in immediate quarantine of the incoming birds.

Federal-Level Enforcement

USDA APHIS has independent authority to enforce federal animal disease regulations under the Animal Health Protection Act (AHPA). Federal penalties for violations can be substantial:

Loss of Indemnity Eligibility

Perhaps the most financially painful consequence of non-compliance is the loss of your right to compensation. This interim rule serves to reduce the risk that a producer becomes inclined to disregard biosecurity because they believe that APHIS will continue to cover the costs associated with damages related to an HPAI outbreak through indemnity payments regardless of their biosecurity status.

The current regulations do not provide a sufficient incentive for producers in control areas or buffer zones to maintain biosecurity throughout an outbreak, and the current regulations provide for indemnity for poultry that are depopulated without visually confirming that the premises are taking appropriate biosecurity measures to prevent future infection and spread. The updated rules address this gap directly — meaning biosecurity compliance is now tied directly to your financial safety net.

Staying Informed and Compliant

Regulations can and do change during active outbreak periods. The best way to stay compliant is to maintain active communication with NHDAMF and to monitor official USDA APHIS announcements. Bookmark the APHIS confirmed flock detections page and the NH DHHS avian flu resource page for the most current guidance.

Avian flu regulations intersect with broader animal health compliance frameworks across New England and the country. If you manage multiple types of animals or properties in different states, our coverage of Vermont regulations and other state-specific compliance guides can help you stay on top of the rules that apply to your operations.

Staying compliant with avian flu regulations in New Hampshire is not just a legal obligation — it is the most effective way to protect your flock, your neighbors’ flocks, and the broader poultry industry from a virus that can devastate operations with very little warning. Register your premises, maintain your biosecurity plan, know your reporting contacts, and document everything. Those four steps form the foundation of responsible poultry ownership in the Granite State.