Premières données sur la reproduction de la Mouette rieuse (Chroicocephalus ridibundus) dans le centre-ouest du Maroc

Radi, M., Aourir, M., Qninba, A., El Mouden, H. & Znari, M. 2017. Premières données sur la reproduction de la Mouette rieuse Chroicocephalus ridibundus dans le centre-ouest du Maroc. Alauda 85: 131-138.
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First breeding data on the Black-headed Gull Chroicocephalus ridibundus in Central West Morocco.

Abstract:

This study presents the first data on a breeding colony of the Black-headed Gull on islets of the Al Massira reservoir in central west Morocco from 2002 to 2008. Laying phenology, nesting site selection, clutch size, egg size and breeding success were investigated. These data provide new information at the southwestern limit of the species’ breeding area (32° N).

Mouette rieuse (Chroicocephalus ridibundus), Lac Telamine, Gdyel (Oran), Algérie

Mouette rieuse (Chroicocephalus ridibundus), Lac Telamine, Gdyel (Oran), Algérie, 20/06/2016 (Ali Mehadji)

Distribution and breeding ecology of the Ferruginous Duck (Aythya nyroca) in Algeria

Djelailia, A., Baaziz, N., Samraoui, F., Alfarhan, A. H. & Samraoui, B. (2017). Distribution and breeding ecology of the Ferruginous Duck Aythya nyroca in Algeria. Ostrich 0(0) DOI: 10.2989/00306525.2017.1313331
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Abstract:

We conducted a survey of the distribution of Ferruginous Duck Aythya nyroca across Algeria and analysed the influence of nest-site characteristics on nesting success at a Ramsar site, Lake Tonga. The species was found to occupy different wetlands (freshwater lakes, brackish marshes and salt lakes) across three major climatic belts (subhumid coastal strip, semi-arid Hauts Plateaux and arid Sahara). Mean clutch size of successful nests was 13.3 ± 6.0 eggs (N = 26) with a hatching rate of 74% for successful clutches. Nesting success was recorded for 44% of nests with clutch desertion (72.7%) accounting for the majority of failed clutches. Egg size of the study population, which breeds at the southern limit of the species’ range, was significantly smaller than that of its northerly counterparts. Clutch size was negatively related to egg size and positively associated with depth of water below the nest, suggesting that older, more experienced or high-quality birds monopolised the safest sites. Successful clutches were significantly associated with tall vegetation, suggesting that when nesting is carried out mainly on offshore floating islets, protection against aerial predators and heat stress determine nesting outcome. Conspecific brood parasitism was significantly and positively associated with deferred egg-laying and smaller egg size, suggesting an age-dependent mechanism.

Distribution et reproduction du Fuligule nyroca Aythya nyroca en Algérie

Nous avons mené une enquête sur la distribution du Fuligule nyroca Aythya nyroca à travers l’Algérie en analysant l’influence des caractéristiques des sites de nidification sur le succès de la nidification au sein d’un site classé Ramsar: le Lac Tonga. L’espèce occupe différentes zones humides (lacs d’eau douce, marais d’eau saumâtre et lacs salés) à travers trois zones climatiques majeures (bande côtière subhumide, Hauts Plateaux semi-arides et Sahara). La grandeur de ponte moyenne est de 10,0 ± 2,96 œufs (N = 29 pontes) avec un taux d’éclosion de 74,7% pour les pontes réussies. Le taux de réussite a totalisé 44% des nids, avec une prédominance d’abandons des pontes causant l’échec de la reproduction (82%). La taille des œufs de la population étudiée est plus petite que celle des populations se reproduisant à des latitudes plus élevées. La grandeur de ponte est négativement associée à la taille des œufs et elle est positivement liée au niveau de l’eau: ceci suggère que les individus plus âgés, ayant plus d’expérience, ou ceux de meilleure qualité monopolisent les sites les plus sûrs. Les pontes réussies sont significativement associées à une végétation haute, suggérant que pour les nids construits sur des îlots flottants, une protection contre les prédateurs aériens et l’exposition au soleil, conditionne le succès de la nidification. Le parasitisme intra-spécifique a été positivement associé à une ponte tardive et à des dimensions réduites des œufs, suggérant un mécanisme dépendant de l’âge.

Ferruginous Duck (Aythya nyroca). Photo: Francis C. Franklin / CC-BY-SA, Wikipedia

Ferruginous Duck (Aythya nyroca). Photo: Francis C. Franklin / CC-BY-SA, Wikipedia

Breeding ecology of House Martins (Delichon urbica) in Northeast Algeria

Hamlaoui, B., Rouaiguia, M., Zebsa, R., Kafi, F., Haddad, S., Lahlah, N. & Houhamdi, M. (2016). On the breeding ecology of House Martins Delichon urbica (Linnaeus 1758) in Northeast Algeria. Zoology and Ecology 26: 77–84.  doi: 10.1080/21658005.2016.1149350
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Abstract:

The study of the reproductive biology of House Martins Delichon urbica was carried out in the cities of Guelma and Hammam Debagh, Northeast Algeria during two years 2013 and 2014. Birds of this species produce two broods per year and per breeding pair. At both study sites, the egg-laying period lasted for almost four months. Egg weight and volume differed between broods and years. The mean clutch size was 3.87 ± 1.29, 4.19 ± 1.02 in Guelma and 3.93 ± 1.13, 3.64 ± 1.30 in Hammam in 2013 and 2014, respectively, with a seasonal decline. Hatching success reached 69 and 74.25% in Guelma, and 74.20 and 63.39% in Hammam in 2013 and 2014, respectively. Fledging success was 64.57 and 72.62% in Guelma, whereas, in Hammam it was 72.22 and 58.16% in 2013 and 2014, respectively. Hatching failure was the main cause of mortality. The breeding parameters and morphometrics of the House Martin’s eggs in Algeria determined during our study differed from those reported in previous studies carried out in different parts of Europe.

 

Food from dumps increases the reproductive value of last laid eggs in the White Stork Ciconia ciconia

Djerdali, S., Guerrero-Casado, J. & Tortosa, F. S. (2016). Food from dumps increases the reproductive value of last laid eggs in the White Stork Ciconia ciconia. Bird Study 63: 107–114.  doi: 10.1080/00063657.2015.1135305

Abstract:

Capsule: Accessing extra food from waste dumps increases egg volume and hatching mass in White Storks.

Aim: To test how White Storks vary their investment in egg size, especially in last laid eggs, in relation to food availability, and to improve our understanding of the importance of extra feeding on intra-clutch variation.

Methods: The study was carried out in three White Stork breeding colonies in northern Algeria. Breeding performance was recorded in 70 nests over three years. White Stork colonies situated close to chicken farms were considered to be part of a ‘pseudo experiment’ where parents had access to extra food. Egg volume, laying order, hatching order and hatching weight were recorded.

Results: Egg volume and hatching mass in White Storks was significantly greater when they had access to extra food. The reproductive value of last laid eggs (fourth and fifth) doubled when females had access to extra food.

Conclusion: Laying smaller last eggs within a clutch provides a mechanism to facilitate early brood reduction in the White Stork, and so should be advantageous when food is scarce. On the contrary, when females had access to extra food, last laid eggs were as big as first eggs which suggests egg size variation is adaptable to local conditions.

White Storks (Ciconia ciconia) at nest, Algeria

White Storks (Ciconia ciconia) at nest, Algeria (Ali Mehadji, flickr)

Population increase and nest-site selection of Cattle Egrets Bubulcus ibis at a new colony in drylands of north-east Algeria

Sbiki, M., Chenchouni, H. & Si Bachir, A. (2015). Population increase and nest-site selection of Cattle Egrets Bubulcus ibis at a new colony in drylands of north-east Algeria. Ostrich 86(3): 231–237.  doi: 10.2989/00306525.2015.1067931

Abstract:

Colony occupation by Cattle Egrets Bubulcus ibis at an arid location in north-east Algeria lasted from mid-March or April to August. The colony, which was founded in 2003, increased from 124 pairs in 2007 to 250 pairs in 2011 and the density of nests from 0.36 to 0.73 nests m−2 in the same period. The number of trees used for nesting increased from 16 trees in 2007 to 40 in 2011. The average height of nesting trees ranged from 12.8 士 3.0 m in 2007 to 13.6 土 2.9 m in 2011, whereas the average height of nests varied between 11.5 土 2.5 m and 13.2 土 2.9 m. Cattle Egrets built their nests mainly on strong primary branches of trees (30%) or secondary branches at the periphery of the tree’s crown (29%). Numbers of nests sited in a tree were significantly influenced by the species of tree and the diameters of its trunk and crown, as well as by the horizontal and vertical positions of nests within the tree.

La reproduction de l’Hirondelle rustique (Hirundo rustica) dans un milieu urbain nord-africain

Haddad, S., Hanane, S. & Houhamdi, M. 2015. La reproduction de l’Hirondelle rustique (Hirundo rustica) dans un milieu urbain nord-africain: quel impact des conditions climatiques et de l’application des insecticides ? Revue d’Ecologie (Terre et Vie) 70(3): 280-290.
PDF in ResearchGate.net

Summary:

Breeding performance of the Barn Swallow (Hirundo rustica) in a North African urban area: what are the impacts of climatic conditions and insecticide applications? The present study examined the effects of climate conditions (temperature, precipitation and wind speed) and human activity (insecticide treatment) on clutch size, number of hatchlings and total productivity of the Barn Swallow in a North African urban area (Guelma, Algeria). Our results demonstrated that climatic conditions did not clearly affect reproductive parameters of this Hirundinidae, unlike insecticide treatments inside nesting-buildings. A seasonal decline of the three studied parameters was recorded. The number of hatchlings and total productivity were greater for first than for second clutches. Likewise, productivity significantly decreased in 2013 compared to 2012. Further research on other environmental factors such as: (i) insect availability; (ii) agricultural activity and (iii) adverse weather events, are an essential track for the implementation of management measures to improve local breeding conditions of this North African urban population.

Résumé:

La présente étude analyse les effets des conditions climatiques (température, précipitations et vitesse des vents) et de l’activité anthropique (traitements aux insecticides) sur la taille de ponte, le nombre d’œufs éclos et la productivité totale de l’Hirondelle rustique dans un milieu urbain Nord-Africain (Guelma, Algérie). Les résultats ont démontré que les conditions climatiques n’affectent pas clairement les paramètres de reproduction de cet Hirundinidé, contrairement aux traitements insecticides des bâtiments de nidification. Les trois paramètres étudiés ont tous subi une importante diminution au fur et à mesure de la progression de la saison de reproduction. Le nombre d’œufs éclos et la productivité totale ont été plus grands pour la première ponte que pour la seconde. Cette productivité a nettement diminuée en 2013 par comparaison à 2012. La poursuite des recherches sur d’autres facteurs environnementaux comme : (i) la disponibilité des insectes ; (ii) l’activité agricole et (iii) les événements météorologiques défavorables, s’avère une piste incontournable pour la mise en œuvre de mesures de gestion visant l’amélioration des conditions locales de reproduction de cette population urbaine Nord-Africaine.

Juvéniles d'Hirondelle rustique (Hirundo rustica)

Juvéniles d’Hirondelle rustique Hirundo rustica (John Haslam, flickr)

Breeding biology of sympatric Laughing (Streptopelia senegalensis) and Turtle (Streptopelia turtur) Doves in NE Algeria

Brahmia, H., Zeraoula, A., Bensouilah, T., Bouslama, Z., & Houhamdi, M. 2015. Breeding biology of sympatric Laughing Streptopelia senegalensis and Turtle Streptopelia turtur Dove: a comparative study in northeast Algeria. Zoology and Ecology  25(3): 220–226.   doi: 10.1080/21658005.2015.1049470
PDF in ResearchGate.net

Abstract:

The Turtle Dove and Laughing Dove display distinct behavior and are morphologically and genetically different. However, microhabitat selection and reproductive success details of the two species are still poorly studied. The geographic distribution of the Laughing Dove in North Africa has clearly expanded nowadays. The breeding ecology and nest placement of this species have been studied previously, but little is currently known about its life history in Algeria. This study aimed to provide the basic information on the breeding biology of the Laughing Dove in Algeria. During two consecutive breeding seasons (2013–2014), the clutch size, brood size, chick survival, timing of breeding, densities of breeding pairs, nest placement, and the main causes of nest failure of the sympatric Laughing Dove and Turtle Dove were studied in an olive orchard in Guelma region, northeast Algeria. Clutch size, brood size, chick survival, the estimated productivity, and nest placement of the two species were similar but timing of breeding and population densities were significantly different. Finally, the largely coincident egg-laying period and the similar clutch size of the two species seem to be the main factors behind their similar survival rate and productivity in our study area.

Laughing Dove (Streptopelia senegalensis), Helwan, Egypt

Laughing Dove (Streptopelia senegalensis), Helwan, Egypt (Rachid H., flickr)

Nest-site selection and reproductive success of the Little Grebe (Tachybaptus ruficollis) in Northeast Algeria

Athamnia, M., Samraoui, F., Kelailia, B., Rouabah, A., Alfarhan, A. H. & Samraoui, B. (2015). Nest-site selection and reproductive success of the Little Grebe Tachybaptus ruficollis in Northeast Algeria. Ardeola 62: 113–124.
doi: 10.13157/arla.62.1.2015.113
PDF in ResearchGate.net

Summary:

We studied the phenology, habitat selection, and interannual and seasonal changes in breeding performance of the little grebe Tachybaptus ruficollis in relation to the spatial structure of a shallow lake during three breeding seasons (2010–2012). Nests were mostly located in shallow waters, close to the shore (98.3 ± 37.9 cm), in vegetation dominated by Scirpus lacustris. The egg-laying period started at the end of March and extended for four months until the end of July. Overall, the mean clutch size was 4.7 ± 1.1 (N = 154) with a modal clutch of 5. There was a seasonal decline in both egg volume and clutch size. The overall nesting success was 60% and the chief causes of nest failure were predation (52%) and adverse weather (20%). Breeding outcome was influenced by water depth, nest size and year of breeding. Predation and nest flooding markedly varied between years. Larger nests had a higher nesting success than smaller ones. Likewise, nests located at greater water depth (further from the shore) succeeded better than ones located in shallower water. As the little grebe forages preferentially in shallow waters, these results suggest that optimal nesting locations may be the result of a trade-off between conflicting selection pressures such as foraging efficiency (better in shallow waters) and nest predation risk (greater in shallow waters).

Little Grebe (Tachybaptus ruficollis) nest with eggs

Little Grebe (Tachybaptus ruficollis) nest with eggs (Sébastien Bertru, wikipedia)

L’avifaune aquatique de la zone littorale atlantique de Rabat-Bouznika (Maroc) : Composition, phénologie et reproduction

Hanane, S. 2014. L’avifaune aquatique de la zone littorale atlantique de Rabat-Bouznika (Maroc) : Composition, phénologie et reproduction. Thèse de Doctorat, Université Mohammed V–Agdal, Rabat.

PDF (6.75 Mb) in Toubkal : Le Catalogue National des Thèses et Mémoires.

Résumé:

Sur la zone littorale de Rabat-Bouznika, des dénombrements réguliers, de janvier 1999 à décembre 2001, ont permis de définir le rythme de migration des espèces d’oiseaux d’eau les plus fréquentes ainsi que leurs statuts phénologiques. Quarante neuf espèces ont fréquenté le site, dont 24 régulières. Les Limicoles et les Laridés sont les groupes les plus dominants. Le suivi de la reproduction a concerné l’Oedicnème criard, la Glaréole à collier, le Gravelot à collier interrompu et la Sterne naine. Ces quatre espèces déposent leurs œufs à même le sol avec une production d’œufs/nid qui avoisine 2 : 1,88 pour l’Oedicnème criard, 2,20 pour la Glaréole à collier, 2,89 pour le Gravelot à collier interrompu et 2,51 pour la Sterne naine. La ponte débute à la dernière décade de mars pour l’Oedicnème criard et le Gravelot à collier interrompu suivi, à la première quinzaine d’avril, par la Glaréole à collier et au début mai par la Sterne naine. Le maximum de l’activité reproductive est enregistrée durant les mois de mai et juin. La durée de la saison de reproduction est plus étalée chez les nicheurs sédentaires (Oedicnème criard et Gravelot à collier interrompu) que chez les migrateurs nicheurs (Glaréole à collier et Sterne naine). Le succès à l’éclosion a été de 49% chez la Glaréole à collier, de 51.5% chez la Sterne naine, de 58.4% chez le Gravelot à collier interrompu et de 71% chez l’Oedicnème criad. Sur cette portion de côte, les plus importants facteurs d’échec ont été le piétinement, le ramassage et l’abandon des œufs. Malgré ces sources de dérangements, la zone littorale de Rabat-Bouznika continue à accueillir une centaine de couples d’oiseaux d’eau nicheurs.

Eclosion des poussins

Eclosion des poussins.

Autres thèses et mémoires de Magister.

Nest-site selection, breeding success and brood parasitism in the common moorhen (Gallinula chloropus) in Algeria

Meniaia, Z., Samraoui, F., Alfarhan, A. H., & Samraoui, B. (2014). Nest-site selection, breeding success and brood parasitism in the common moorhen Gallinula chloropus in Algeria. Zoology and Ecology 24: 305–313. doi:10.1080/21658005.2014.959281
PDF in ResearchGate.net

Abstract :

Between 2010 and 2012, we studied the breeding ecology of the common moorhen Gallinula chloropus at Lake Tonga, north-east Algeria. Nests were low lying (mean ± SD = 13.64 ± 5.07 cm) and located in tall, dense stands of Scirpus lacustris (72%). The egg-laying period was relatively short, between mid-April and the end of June, peaking in the first half of May. The mean overall clutch size ± SD was 7.03 ± 2.52 (N = 58 clutches) with a slight seasonal downward trend. Rates of successful clutches increased with egg-laying date and water depth mainly due to the seasonal decrease in nest predation and nest flooding. Nest predation, in contrast to nest flooding, was also negatively associated with water depth. The study documented relatively frequent cases of conspecific brood parasitism as well as rarely reported events of interspecific brood parasitism involving the common moorhen both as a host and as a parasite of other avian species.

Related:

Samraoui, F., Alfarhan, A. H., & Samraoui, B. (2013). Status and breeding ecology of the Common Moorhen Gallinula chloropus in Algeria. Ostrich 84 (2): 137-144.

Nest of Common Moorhen (Gallinula chloropus) with an egg and a chick

Nest of Common Moorhen (Gallinula chloropus) with an egg and a chick (Z. Meniaia et al. 2014).