Removing a swallow, swift, or house martin nest from a property in Spain is more than a simple cleaning job. Spanish law protects wild birds and their nesting sites from damage and destruction. Unauthorized removal, even when a nest appears abandoned, can lead to large financial penalties.
Spain’s Law 42/2007 on Natural Heritage and Biodiversity provides the national structure. Article 57 prohibits conduct that includes destroying or damaging protected birds’ nests and sites used for breeding, wintering or rest. Serious infringements carry fines from €3,001 to €200,000, but the upper figure is a possible statutory maximum, not an automatic penalty for every nest removal. The outcome depends on the circumstances and legal classification, as well as the competent authority and any applicable regional rules. Many birds also return to the same sites across successive breeding seasons, so removing a nest can eliminate a recurring nesting place even when no adult birds are visible.
Heavy Fines for Nest Removal
Each spring, these birds migrate from Africa to Spain, often returning to sites where they have previously raised their young. Destroying a nest can mean the loss of an established breeding site. Article 57 of Law 42/2007 specifically prohibits the destruction or deterioration of nests and areas used for breeding or rest by protected species. The statute is published in Spain’s official state gazette, the Boletín Oficial del Estado.
Nest disturbance can arise during building renovations or façade repairs, as well as routine maintenance. SEO/BirdLife, Spain’s bird-conservation organization, says national and European protections apply to these birds and their nests. The legal structure allows exceptions only under tightly controlled conditions; routine maintenance, cleaning or aesthetic preferences do not by themselves establish grounds for removal. Protection concerns the nest and breeding site, not only the presence of an adult bird.
When Is Removal Permitted?
Exceptions are limited and require authorization from the competent environmental authority. European rules allow derogations only under specified conditions, including that there is no satisfactory alternative and that the exception does not undermine the species’ conservation. The authority must assess whether the legal criteria are met; a property owner should not assume that safety, convenience or renovation work alone permits a nest to be removed.
For construction or renovation projects, owners should contact the environmental department of the relevant autonomous community before work begins. Spain’s national law sets the structure, while regional authorities administer many practical authorization and enforcement procedures; requirements can so vary by location. An ecological inspection before work starts can identify nests and help schedule construction to avoid disturbance. SEO/BirdLife also promotes locating nests, informing property owners and marking areas that should not be disturbed. If an exception is authorized, the authority may set conditions for the work, including measures to protect nesting opportunities.
Why These Birds Matter
These birds play an impressive ecological role. As insectivores, they consume flies, mosquitoes and other insects during spring and summer. SEO/BirdLife estimates that a single swallow can eat up to 850 insects a day, helping to control insect populations naturally.
Their presence benefits urban and rural environments by reducing insect populations and contributing to ecological balance. Anyone who witnesses nest destruction, blocked nest entrances or nets preventing birds from reaching breeding sites can report the matter to the Guardia Civil’s Seprona unit or the relevant regional environmental authority.
Spain’s approach to wildlife protection extends beyond birds. In a related case, a retired farmer in La Rioja was ordered to repay nearly €47,000 after authorities found he continued managing his agricultural business while receiving a full pension. More details are available in this report on pension and farm work conflicts.
