Domingo Concepción’s scientific contributions

... Although in the late 1990s the population probably only consisted of 8-10 breeding pairs (Delgado et al. 1999, Martín & Lorenzo 2001, recent estimates of its population size based on observations conducted during 1997-2007 suggest that there is a minimum of 20 breeding pairs ). This raptor faces still several human-related threats on the Canary Islands (Rodríguez et al. , 2010(Rodríguez et al. , 2019 and so is classified as Endangered in the Spanish national and regional catalogues of threatened species (Siverio & Concepción 2004). In addition to collisions with man-made structures, this species is directly persecuted by hunters and pigeon-fanciers and some birds have been shot in recent decades (Siverio & Concepción 2004, Rodríguez et al. 2010. ...

Reference:

Status, habitat and diet of breeding Barbary falcons from a rugged oceanic island in the western limit of its distribution

... La subpoblación canaria se considera «En Peligro» según el último Libro Rojo de las Aves de España por su pequeño tamaño poblacional, a pesar de considerarse en evolución positiva (Siverio, 2004). Según la información obtenida en este censo, la subespecie pelegrinoides debería calificar como «En Peligro» por las mis- mas razones que calificó en el último Libro Rojo, criterio D (UICN, 2001). ...

Reference:

El halcón peregrino en Granada

... The falcon population in the Canary Islands has notably increased in the last three decades, increasing from just seven known pairs in the 1980s (Hernández et al. 1991) to more than 200 today (Rodríguez et al. 2022). These native falcons breed on large cliffs from the coast to higher altitudes, lay eggs from the first half of February to late March, and prey primarily on Rock Pigeons (Columba livia; Delgado et al. 1999, Rodríguez et al. 2009, Rodríguez and Siverio 2019. During the last decades, we monitored more than 250 falcon breeding attempts in the course of our other studies (e.g., Rodríguez et al. 2007, Rodríguez et al. 2022. ...

Reference:

Alloparental Care of Eurasian Kestrel (Falco tinnunculus) Broods by Barbary Falcon (F. peregrinus pelegrinoides)