This presentation explains the rationale, objectives and results of Montagu´s Harrier’s nests surveillance
experiments conducted in the Aeromab Project using small UAS (Unmanned Aerial Systems) in Seville
countryside (Southwest of Spain). It presents the situation of the species, whose nests are threatened by
harvesters and the observational techniques that are being used nowadays to monitor the animals. We
describe how a small UAS was used to get aerial photographs that were georeferenced to locate the
nests. We demonstrated that it is possible to use SUAS to complement the nests monitoring, saving a lot
of personnel effort and costs and potentially with less impact on the animals than conventional manned
aircrafts. This also would avoid the necessity of access by foot to the nests and that minimizes the
associated potential risk of predation.