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ANIMALSO
Breeding

Avian flu, Brexit transport rules and rising costs drive Castle Espie captive-bird losses

Castle Espie’s captive collection has fallen from about 500 birds to fewer than 100. Avian-flu restrictions, post-Brexit transport problems and unsustainable costs are driving a move to a wetland-conservation model.

By Animalso Team 4 min read

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Castle Espie is transferring its remaining captive birds to other Wildfowl & Wetlands Trust (WWT) centres, with the move due to finish by November 2026. WWT says a collection that once numbered about 500 birds has fallen below 100 because avian-flu controls and post-Brexit transport barriers made replacements difficult, while the cost of running a small guided-tour programme became unsustainable.

What is changing at Castle Espie

BBC News NI reported on 17 October 2026 that WWT is relocating the birds still held at Castle Espie. WWT’s changes information says the transfers are taking place during October, and that all captive birds are expected to leave by November 2026.

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The centre in County Down will remain open from 10:00 to 17:00. It is being repositioned as a hub for wetland nature conservation rather than a site built around a large captive collection. Guided school tours will end, but schools can continue to book self-guided visits.

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Alex Lane, WWT’s director of operations, said the collection had once contained around 500 birds and now has fewer than 100. The reduction is not a planned cull or a simple change in visitor preference; it reflects difficulties replacing birds and the financial burden of operating the programme.

How avian flu reduced the collection

Confirmed H5N1 infection and movement controls

WWT records that Castle Espie temporarily closed after highly pathogenic avian influenza was confirmed in a small number of captive birds. Northern Ireland’s Department of Agriculture, Environment and Rural Affairs (DAERA) confirmed H5N1 at the premises and imposed a 3km Captive Bird Monitoring Zone.

Those controls are designed to limit transmission. Depending on the circumstances, they can restrict movements, require enhanced monitoring and add paperwork and biosecurity measures before birds can be moved or introduced. For a collection that depends on regular transfers between sites, each restriction reduces the practical options for maintaining numbers.

The wider wild-bird signal is different evidence

The captive count should not be confused with the wild colony monitored at Castle Espie. The British Trust for Ornithology’s 2024 Strangford Lough report recorded an 81% fall in that colony between 2023 and 2024, probably at least partly reflecting the impact of highly pathogenic avian influenza in 2023. That figure describes a monitored wild population; it is not a measurement of the captive collection.

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Why post-Brexit transport makes replacement harder

Lane also pointed to the practical difficulties of moving birds between mainland Great Britain and Ireland or Northern Ireland after Brexit. Her explanation was: “There is no aligned system for bringing birds into Ireland from mainland UK.”

In effect, a bird transfer can now involve systems and requirements that do not line up across jurisdictions. When avian-flu restrictions are added, a movement that might once have been routine can require different approvals, health documentation, quarantine or route planning. WWT says this combination has left it with a “vastly reduced collection” rather than a reduction it chose for display or conservation reasons.

Why finances and school tours matter

WWT is also dealing with higher costs and difficult income conditions. The BBC report describes a sizeable deficit as unsustainable, but it does not publish an audited amount. It also says too few schools book guided tours to cover the cost of providing them.

Ending guided tours therefore addresses two linked problems: there are fewer captive birds to interpret, and the staffing and operating cost of a low-volume service is no longer justified. Self-guided visits remain available, allowing schools to use the reserve without the same scheduled guide provision.

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Old and new Castle Espie models

Aspect Previous model Model from late 2026
Birds on site A captive collection of around 500 birds at its former peak Remaining captive birds transferred to other WWT sites; the collection is expected to end by November 2026
Education Guided school tours alongside visitor programming Guided school tours end; self-guided school visits continue
Animal movements Transfers supported the captive collection Avian-flu restrictions and post-Brexit transport complications limit practical transfers
Site emphasis Wetland reserve plus a substantial captive-bird attraction More space and programming focused on wild birds and wetland conservation
Financial approach Visitor and education operations included the captive-bird programme A smaller, more conservation-focused operation intended to be financially sustainable

What visitors and schools should expect

For ordinary visitors

  • The reserve remains open from 10:00 to 17:00, according to WWT’s changes information.
  • Visitors should expect a wetland nature experience rather than the former scale of captive-bird displays.
  • WWT says removing the captive collection will open more space for wild birds and support the site’s conservation role.

For schools

  • Guided school tours are ending because demand does not cover their costs.
  • Self-guided school visits remain available, so teachers should check current booking arrangements with WWT before travelling.
  • Lessons can focus on wetland habitats and wild-bird conservation, reflecting the site’s revised purpose.
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What happens next

During October 2026, WWT is moving the remaining birds to other sites within its network. Once that process is complete, Castle Espie will operate without its captive-bird collection and concentrate on wetland conservation, wild-bird habitat and visitor access.

WWT is asking supporters to visit its centres, volunteer, donate or share its work. Those requests are part of the organisation’s response to its financial pressures, but they do not change the immediate operational decision: the Castle Espie collection is being relocated because disease controls, cross-border transport barriers and running costs have made the former model unworkable.

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avian influenzaCastle EspieH5N1Northern Irelandwildlife conservationWWT

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