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Showing papers in "Ostrich in 2021"


Journal ArticleDOI
30 Apr 2021-Ostrich
TL;DR: In Africa, increasing human populations and anthropogenic land-use change are generally affecting diversity negatively as mentioned in this paper, but especially in Africa, especially in Sub-Saharan Africa, a large number of people are migrating to the region.
Abstract: Globally, but especially in Africa, increasing human populations and anthropogenic land-use change are generally affecting diversity negatively. Urban environments in southern Africa typically comp...

14 citations


Journal ArticleDOI
18 Mar 2021-Ostrich
TL;DR: In this article, the impacts of land-use change on bird communities were investigated in Africa. But the authors focused on the impacts on the African Bird Atlas and did not consider the impact of urbanization on birds.
Abstract: High human population growth and rapid urbanisation, particularly in Africa, have led to an increased interest in the impacts of this land-use change on bird communities. The African Bird Atlas Pro...

8 citations



Journal ArticleDOI
12 May 2021-Ostrich
TL;DR: The Pennant-winged Nightjar Caprimulgus vexillarius was described in 1838 by John Gould from a male in breeding plumage, but its given locality, various islands in the Indian Ocean and Red Sea coas...
Abstract: The Pennant-winged Nightjar Caprimulgus vexillarius was described in 1838 by John Gould from a male in breeding plumage, but its given locality, various islands in the Indian Ocean and Red Sea coas...

7 citations


Journal ArticleDOI
27 Aug 2021-Ostrich
TL;DR: The Algerian Nuthatch is an endemic and protected bird species in Algeria, and its different habitats are threatened by fires and others human actions; the species is therefore considered ‘Endangered’ as mentioned in this paper.
Abstract: The Algerian Nuthatch is an endemic and protected bird species in Algeria, and its different habitats are threatened by fires and others human actions; the species is therefore considered ‘Endangered’. A faecal samples analysis of the species’ nestlings was done to determine their diet. The nestling faecal samples were collected during the breeding season of 2019 in the Tamentout deciduous forest in the region of Babors’ Kabylia (north-east Algeria). The faecal samples analysis allowed us to count 686 individuals belonging to 39 different prey taxa. They belong to two arthropods classes and six orders. Insects (95.4%) were more dominant compared with spiders (4.96%). Beetles were most diverse, with 22 prey taxa and 293 individuals. Dermaptera (earwigs) were represented by only two prey taxa and 265 individuals, with the European Earwig Forficula auricularia recorded 253 times. A correlation was also found between the prey sizes and energy intake. Costello’s charts indicated five potential prey including Forficula auricularia, Oxythyrea funesta and Anthaxia sp. were the most consumed. The niche breadth calculation (0.017) revealed that the Algerian Nuthatch specialises on some prey items such as Forficula auricularia to feed its nestlings. The most prized prey species had sizes between 14.5 mm and 19 mm, Forficula auricularia has a size of 15 mm.

7 citations


Journal ArticleDOI
06 Apr 2021-Ostrich
TL;DR: In this article, the authors explored responses to day-to-week fluctuations in human presence, especially in core urban areas, and found that the food availability is influenced by short-term fluctuations of human presence.
Abstract: Anthropogenic food availability is influenced by short-term fluctuations in human presence, especially in core urban areas Few studies have explored responses to such day-to-week fluctuations, spe

6 citations


Journal ArticleDOI
10 Feb 2021-Ostrich
TL;DR: In this article, a lack of basic information on the prevalence, frequency and quality of supplementary feeding of birds was identified. But, there is no basic information about the prevalence and frequency of supplementing birds.
Abstract: Supplementary feeding of birds may have considerable ecological and evolutionary effects on bird communities. However, there is a lack of basic information on the prevalence, frequency and quality ...

4 citations


Journal ArticleDOI
04 Mar 2021-Ostrich
TL;DR: In this paper, satellite-tracked four juvenile Levant Sparrowhawks Accipiter brevipes from their nests in southern Armenia, and the mean departure date from summering areas was 30 August.
Abstract: In 2013, we satellite-tracked four juvenile Levant Sparrowhawks Accipiter brevipes from their nests in southern Armenia. Mean departure date from summering areas was 30 August. During autumn, birds...

4 citations


Journal ArticleDOI
09 Apr 2021-Ostrich
TL;DR: In this article, the preservation of indigenous vegetation patches and corridors is regarded as an important component of the built environment for the survival of birds, and field research was conducted at Boknes and...
Abstract: Conserved remnants of indigenous vegetation patches and corridors are regarded as important components of the built environment for the survival of birds. Field research was conducted at Boknes and...

4 citations


Journal ArticleDOI
10 May 2021-Ostrich
TL;DR: This paper revisited the taxonomy of all Afrotropical spurfowl and francolins and proposed significant changes at the species level, and proposed a taxonomic taxonomy based on the species-level taxonomy.
Abstract: Recently, two papers by Mandiwana-Neudani et al. (2019a, 2019b) revisited the taxonomy of all Afrotropical spurfowl and francolins and proposed significant changes at the species level. A careful r...

4 citations


Journal ArticleDOI
22 Feb 2021-Ostrich
TL;DR: In this paper, Raptor mortality caused by 22 kV distribution power lines was studied, and it was shown that poorly designed power pylons are one of the most important human-related causes of large bird mortality worldwide.
Abstract: Electrocution on poorly designed power pylons is one the most important human-related causes of large bird mortality worldwide. Raptor mortality caused by 22 kV distribution power lines was studied...

Journal ArticleDOI
09 Apr 2021-Ostrich
TL;DR: A southern perspective on urban birds is given in this article, where African urban birds are discussed from the perspective of the Ostrich, a type of ostrich, in the special issue "African urban birds".
Abstract: (2021). A southern perspective on urban birds. Ostrich: Vol. 92, SPECIAL ISSUE: African urban birds, pp. iii-v.

Journal ArticleDOI
09 Apr 2021-Ostrich
TL;DR: In Makhanda (Grahamstown), a non-industrial town with approximately 85 000 inhabitants, the authors have recorded 174 bird species within the urban area, of which 104 species are likely to breed regularly.
Abstract: In Makhanda (Grahamstown), a non-industrial town with approximately 85 000 inhabitants, we have recorded 174 bird species within the urban area, of which 104 species are likely to breed regularly. ...

Journal ArticleDOI
08 Mar 2021-Ostrich
TL;DR: The use of the ethnonym "Hottentot" in the bird names "HOTTentot Teal" and "HOTentot Buttonquail" dates back to the early 20th century as discussed by the authors.
Abstract: (2021). The use of the ethnonym ‘Hottentot’ in the bird names ‘Hottentot Teal’ and ‘Hottentot Buttonquail’. Ostrich. Ahead of Print.


Journal ArticleDOI
04 Jun 2021-Ostrich
TL;DR: Evaluating the species composition, richness, and relative abundance of birds in Moka, an agricultural town with patches of secondary forest located on the edge of a protected area on Bioko helps to create a baseline with which to make comparisons over time as land-use changes affect the habitat surrounding Moka.
Abstract: Bioko Island, Equatorial Guinea is a biodiversity hotspot facing encroaching development, logging, and hunting. Long-term monitoring of the species composition and community structure of birds on B...

Journal ArticleDOI
23 Feb 2021-Ostrich
TL;DR: The existing subspecies designations are clearly not supported by the genetic data presented here and thus more research into this complex is required, while its limited and isolated range warrants increased conservation efforts and it is proposed its recognition as an evolutionarily significant unit.
Abstract: The Spike-heeled Lark Chersomanes albofasciata is a peculiar, short-tailed lark confined to southern, central and East Africa. Typical of resident larks, it exhibits marked geographic variation in ...

Journal ArticleDOI
04 Feb 2021-Ostrich
TL;DR: In this article, the authors evaluated the importance of Stone Partridge as a source of food and a socio-cultural aspect in Benin per ethnic groups, gender and age class.
Abstract: Considered a widespread gamebird found across the northern Afrotropical region, the Stone Partridge Ptilopachus petrosus is used in magical rituals and for traditional medicine in Africa. Although considered to be a species of Least Concern by the IUCN, loss of their habitat and hunting has caused them to be locally threatened. The aim of this ethno-ornithological study was to assess the utilization of Stone Partridge through surveys conducted in traditional communities. Some 384 people across 13 ethnic groups in Benin Republic were interviewed. Standardised ethnozoological indices were used to evaluate the importance of Stone Partridge as a source of food and a socio-cultural aspect in Benin per ethnic groups, gender and age class. Some 91.15% of respondents cited food as the major use category of Stone Partridge, followed by traditional medicinal and magical ritual. Responses varied by ethnic group and gender, but not age. Respondents reported that hunting is a major threat, leading to population declines. Stone Partridge plays an important role in rural communities in the study area, but a national conservation management strategy is lacking for this and other gamebird species. French title: Utilisation traditionnelle de la poule de rocher Ptilopachus petrosus au Benin: pratiques alimentaires et medico-magiques Consideree comme un oiseau gibier repandu dans la region afrotropicale du nord, la poule de rocher Ptilopachus petrosus est utilisee dans les rituels magiques et en medecine traditionnelle en Afrique. Bien que consideree comme une espece de preoccupation mineure par l’UICN, la perte de l’habitat et la chasse constituent les principaux facteurs de menace. Le, but de cette etude ethno-ornithologique est d’evaluer l’utilisation de la poule de rocher a travers des enquetes menees chez les populations locales. 384 personnes de 13 groupes ethniques de la Republique du Benin ont ete interrogees. Des indices ethnozoologiques ont ete utilises pour evaluer l’importance alimentaire et socioculturelle de l’espece par groupe ethnique, sexe et classe d’âge. 91,15% des repondants ont cite l’usage alimentaire comme la principale categorie d’utilisation de la poule de rocher, suivie des utilisations medico-magiques. Les reponses varient suivant le sexe et le groupe ethnique de l’espece mais pas selon l’âge. Les repondants ont indique que la chasse etait une menace majeure, entrainant un declin de la population. La poule de rocher joue un role important en milieu rural au Benin. Cependant, il n’existe aucune strategie de gestion de conservation pour cette espece au niveau national. Keywords: Benin, culture, gamebird, gibier, perceptions

Journal ArticleDOI
17 Mar 2021-Ostrich
TL;DR: In this paper, the double couvaison of 10 female Southern Yellow-billed Hornbills Tockus leucomelas in a single Namibian population during the 2019/2020 breeding season was investigated.
Abstract: Double-brooding is an avian breeding strategy where birds produce at least two successful nests in a single season. Double-brooding is seen most frequently in small passerines for which the breeding season is lengthy enough that they can easily fit in multiple nesting attempts. Such a pattern of breeding is therefore less common among large birds with long incubation periods and slow offspring development. In the case of hornbills (Family Bucerotidae), double-brooding would be unexpected for not only these reasons, but also due to the fact that the females of nearly all hornbill species exhibit a synchronous moult of flight feathers immediately following clutchcompletion. Double-brooding would thus require not only an exceptionally long breeding season, but also that females undergo two very costly flight feather moults in a single season. Here we describe the double-brooding of 10 individual female Southern Yellow-billed Hornbills Tockus leucomelas in a single Namibian population during the 2019/2020 breeding season. Because the breeding cycle of Yellow-billed Hornbills lasts three months, double-brooding requires that conditions remain appropriate for breeding for more than half the year, a stringent requirement in a relatively arid country. Our analysis demonstrates that double-brooding is not a response toeither small spring brood sizes or the disappearance of fledglings and appears not to be limited to females of above-average mass. Rather, we found that double-brooding is most common among females who initiated their spring nest early and appears to be associated with wetter-than-average years. French title: Double couvaison chez le Calao leucomele Tockus leucomelas La double couvaison est une strategie de reproduction des oiseaux qui consiste a produire au moins deux nids reussis en une seule saison. La double couvaison se rencontre le plus souvent chez les petits passereaux dont la saison de reproduction est suffisamment longue pour qu’ils puissent facilement s’adapter a plusieurs tentatives de nidification. Un tel mode de reproduction est donc moins frequent chez les grands oiseaux avec de longues periodes d’incubation et un developpement lent de la progeniture. Dans le cas des calaos (famille des Bucerotidae), une double couvaison serait inattendue pour ces raisons, mais aussi parce que les femelles de presque toutes les especes de calaos presentent une mue synchrone des plumes de vol immediatement apres la fin de la ponte. Ladouble couvaison necessiterait donc non seulement une saison de reproduction exceptionnellement longue, mais aussi que les femelles subissent deux mues tres couteuses des plumes de vol en une seule saison. Nous decrivons ici la double couvaison de 10 individus femelles de calao leucomele Tockus leucomelas dans une seule population namibienne pendant la saison de reproduction 2019/2020. Comme le cycle de reproduction de T. leucomelas dure trois mois, la double couvaison exige que les conditions restent appropriees pour la reproduction pendant plus de la moitie de l’annee - une exigence rigoureuse dans un pays relativement aride. Notre analyse demontre que la double couvaison n’est pas une reponse a la petite taille des couvees printanieres ni a la disparition des oisillons et ne semble pas se limiter aux femelles de masse superieure a la moyenne. Nous avons plutot constate que la double couvee est plus frequente chez les femelles qui ont commence leur nid de printemps tot et semble etre associee a des annees plus humides que la moyenne. Keywords: breeding cycle, molt, Namibia, two nests, wet season

Journal ArticleDOI
30 Apr 2021-Ostrich
TL;DR: The Egyptian Geese Alopochen aegyptiaca are distributed across most of Africa and their calls dominate the soundscape of many urban areas, yet their acoustic behaviour is poorly documented or understood.
Abstract: Egyptian Geese Alopochen aegyptiaca are distributed across most of Africa. Their calls dominate the soundscape of many urban areas, yet their acoustic behaviour is poorly documented or understood. ...

Journal ArticleDOI
24 Feb 2021-Ostrich
TL;DR: In this article, the Caspian Tern Hydroprogne caspia is widely distributed, but it is rare and little studied in southern Africa, and the prey delivered by caspian terns to a breeding colony near the Berg R...
Abstract: The Caspian Tern Hydroprogne caspia is widely distributed, but it is rare and little studied in southern Africa. We recorded the prey delivered by Caspian Terns to a breeding colony near the Berg R...

Journal ArticleDOI
23 Mar 2021-Ostrich
TL;DR: Discriminant function analysis of three commonly measured morphometric characters of adult birds indicated that the combination of head length and bill depth were the most accurate variables to use in a discriminant function model, predicting the sex with 97% accuracy.
Abstract: Kelp Gulls Larus dominicanus are not sexually dimorphic by plumage or visual characteristics and it is therefore difficult to distinguish males from females in the field. This paper assesses the se...

Journal ArticleDOI
19 May 2021-Ostrich
TL;DR: In this paper, the best student article published in Ostrich during 2020: "We hope to see vultures circling again one day" is described. But this paper was published during the first semester of 2019.
Abstract: (2021). Best student article published in Ostrich during 2020: we hope to see vultures circling again one day. Ostrich: Vol. 92, No. 2, pp. iii-iv.