Black-headed Gull breeding range expansion

By | 23 March 2016

First breeding record of Black-headed Gull (Chroicocephalus ridibundus) in Africa was found at an islet of Barrage Al-Massira in 2002 (Radi et al. 2004; Thévenot et al. 2004). Since then, the species has colonised many other wetlands in Morocco, Algeria and in Tunisia.

L’expansion de l’aire de reproduction de la Mouette rieuse au Maroc. Nous énumérons ici quelques nouveaux cas de reproduction inédits dans de nouveaux sites (marais de Smir, Sidi Moussa-Oualidia…).

In addition to known breeding sites, there are other unpublished breeding records in others sites in Morocco:

Smir marshes:

Breeding attempts (mating and attending nests) observed at Smir marshes in 2011, see photo 2 (R. El Khamlich & M. Amezian)

Sidi Moussa-Oualidia wetlands:

First breeding record of Black-headed Gull at this site was discovered in 2013 (Eric Alblas & M. Amezian). I went back to the area in May 2014 and conducted a detailed search in the marches and found several birds nesting.

In June 2014, as part of volunteering work with GREPOM to study the Andalusian Buttonquail (Turnix sylvaticus), I with Carlos Gutiérrez, Ruth García Gorria and Ernesto Gomez Alvarez visited the breeding site and found that the Black-headed Gulls already had checks as the adults were very aggressive towards us when we approached their colony (photo 1).

Also in 2014, GOMAC members found the colony during their visit to the site.

In late April 2015, 59 breeding pairs were found by Xurxo Piñeiro. He also observed mating near Eljadida, including a Mediterranean Gull (Ichthyaetus melanocephalus) paired with a Black-headed Gull.

Sebkha Zima:

Breeding recorded in 2010 (Mohamed Radi).

Daya Ouled Bounayeje, Jorf Lasfar:

On 16 June 2016, Ruth Garcia Gorria visited a small wetland east of Jorf Lasfar called Daya Ouled Bounayeje and recorded a minimum of 80 Black-headed Gulls with chicks (photo 3).

Two weeks earlier (2 June), Benoït Maire had visited the same site and counted about 70 adults, 12 recently fledged nestlings and 7 occupied nests.

References:

  • Radi, M., Qninba, A., Dakki, M. & Thévenot, M. 2004. Nidification de la Mouette rieuse Larus ridibundus et de la Sterne hansel Sterna nilotica dans le lac de barrage d’Al Massira (Maroc central). Alauda 72: 53-58.
  • Thévenot, M., Radi, M., Qninba, A. & Dakki, M. 2004. First proven breeding record of the Black-headed Gull Larus ridibundus in Africa. Alauda 72: 59-61.

A small note summarising these unpublished breeding records should be published soon.

Many thanks to Ruth and Benoït for the recent observations and to all previous observers as well.

Black-headed Gull (Chroicocephalus ridibundus) at the breeding colony, Sidi Moussa, 20 June 2014

Black-headed Gull (Chroicocephalus ridibundus) at the breeding colony, Sidi Moussa, 20 June 2014 (Carlos Gutiérrez Expósito)

Black-headed Gull (Chroicocephalus ridibundus) at nest, Smir marches, Morocco

Black-headed Gull (Chroicocephalus ridibundus) at nest, Smir marches, 29 May 2011 (Rachid El Khamlichi)

Adult Black-headed Gulls with chicks and Black-winged Stilts, Daya Ouled Bounayeje, east of Jorf Lasfar, 16 June 2016 (Ruth Garcia Gorria).

Adult Black-headed Gulls with chicks and Black-winged Stilts, Daya Ouled Bounayeje, east of Jorf Lasfar, 16 June 2016 (Ruth Garcia Gorria).

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