Scientists in the United Kingdom have developed a forensic DNA profiling system capable of helping investigators distinguish legally captive-bred peregrine falcons from birds illegally removed from the wild.
The University of Sheffield announced the development on November 12, 2026, highlighting how genetic evidence is already being used in wildlife crime investigations and criminal prosecutions.
Peregrine falcons are protected birds in the United Kingdom. However, demand associated with international falconry has raised concerns about wild chicks being taken from nests and falsely presented as captive-bred animals.
Such cases present a forensic challenge because a bird's appearance alone may not reliably establish its origin or parentage.
To address this problem, researchers from the Universities of Sheffield and Leicester collaborated on a project led by the Scottish Government's Science and Advice for Scottish Agriculture (SASA).
The team developed a validated set of genetic markers designed to identify individual peregrines and establish biological relationships between birds, including parent-offspring and sibling relationships.
Researchers also established a national peregrine DNA database containing genetic profiles from wild and captive populations.
Licensed bird ringers collected mouth swabs from wild peregrine chicks before returning them to their nests, helping build a reference collection linked to known wild birds.
According to the university, the database now contains more than 1,000 samples from wild peregrines and approximately 500 samples from captive falcons.
These records allow investigators to compare DNA from a bird suspected of illegal origin against known individuals and family groups.
For example, genetic evidence may contradict a claim that a particular falcon was bred by captive parents if its profile instead establishes a relationship with birds sampled at a wild nesting site.
The university reports that the toolkit has already been used successfully in multiple criminal investigations, contributing to convictions involving illegally taken peregrines.
In some cases, investigators were able to trace birds back to their original nesting locations.
The United Kingdom's Animal and Plant Health Agency also uses the DNA toolkit and database to examine breeding relationships and assess compliance with wildlife legislation.
Researchers at Sheffield contributed to the development and forensic validation of the genetic marker system, while licensed bird ringers across the country supported reference sample collection.
The newly reported research includes forensic validation and a Scottish case study demonstrating practical application.
However, DNA evidence does not independently establish whether a transaction was legal or prove who removed a bird from the wild.
Investigators must interpret genetic relationships alongside breeding records, permits, collection histories, and other evidence.
The effectiveness of database comparisons also depends on the availability and representativeness of reference samples.
Despite these limitations, the development demonstrates how forensic genetics can support wildlife protection by testing claims of captive breeding and linking suspected illegally traded animals to wild populations.