Namibia, Okavango & Victoria Falls Overland II 2015
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Jacobin Cuckoo of Either the Cape Bulbul P
556 Cuculidae: cuckoos and coucals months later. In Botswana, departure time was correlated with total rainfall during the summer, birds being recorded two months later at the end of a wet year than during drought years (Herremans 1994d). Differences between the subspecies in timing of occurrence and different ranges within the region, if any, have not been unravelled. Breeding: It is a brood parasite whose prime hosts are Pycnonotus bulbuls, the Sombre Bulbul Andropadus impor- tunus, and the Fiscal Shrike Lanius collaris (Rowan 1983; Maclean 1993b). Egglaying has been recorded in the region October–April, with a peak November–January (Dean 1971; Irwin 1981; Rowan 1983; Tarboton et al. 1987b; Skinner 1996a; Brown & Clinning in press). The atlas data suggest breeding to be a month later than recorded in the literature, but this results from a bias towards the recording of recently fledged young. Interspecific relationships: Because the distribution map represents both breeding and nonbreeding visitors, it is not straightforward to relate it to the distributions of host species. Breeding was, however, reported from all Zones and it can be deduced that it must use Blackeyed Pycnonotus barbatus and Redeyed P. nigricans Bulbuls extensively as hosts, but there is no distributional evidence for exclusive use Jacobin Cuckoo of either the Cape Bulbul P. capensis or the Sombre Bulbul. Bontnuwejaarsvoël The bulbuls, however, all have parts of their range where the cuckoo does not occur, but least so for the Blackeyed Bulbul. Clamator jacobinus Historical distribution and conservation: It was once quite common in the Cape Peninsula (3418A) but is now only The Jacobin Cuckoo is widespread in the Afrotropical a rare visitor to the southwestern Cape Province (Rowan 1983; savannas, both north and south of the equator (Fry et al. -
South Africa: Magoebaskloof and Kruger National Park Custom Tour Trip Report
SOUTH AFRICA: MAGOEBASKLOOF AND KRUGER NATIONAL PARK CUSTOM TOUR TRIP REPORT 24 February – 2 March 2019 By Jason Boyce This Verreaux’s Eagle-Owl showed nicely one late afternoon, puffing up his throat and neck when calling www.birdingecotours.com [email protected] 2 | TRIP REPORT South Africa: Magoebaskloof and Kruger National Park February 2019 Overview It’s common knowledge that South Africa has very much to offer as a birding destination, and the memory of this trip echoes those sentiments. With an itinerary set in one of South Africa’s premier birding provinces, the Limpopo Province, we were getting ready for a birding extravaganza. The forests of Magoebaskloof would be our first stop, spending a day and a half in the area and targeting forest special after forest special as well as tricky range-restricted species such as Short-clawed Lark and Gurney’s Sugarbird. Afterwards we would descend the eastern escarpment and head into Kruger National Park, where we would make our way to the northern sections. These included Punda Maria, Pafuri, and the Makuleke Concession – a mouthwatering birding itinerary that was sure to deliver. A pair of Woodland Kingfishers in the fever tree forest along the Limpopo River Detailed Report Day 1, 24th February 2019 – Transfer to Magoebaskloof We set out from Johannesburg after breakfast on a clear Sunday morning. The drive to Polokwane took us just over three hours. A number of birds along the way started our trip list; these included Hadada Ibis, Yellow-billed Kite, Southern Black Flycatcher, Village Weaver, and a few brilliant European Bee-eaters. -
Patterns of Bird Diversity in Kruger National Park, South Africa: Insights from Distribution Modelling Using Point Count Data in 2009
Patterns of bird diversity in Kruger National Park, South Africa: insights from distribution modelling using point count data in 2009 Peter Long1,2 & Frazer Higgins1,2 1 Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK +44 (0)1225 385437 [email protected] 2 Operation Wallacea Ltd. Hope House, Old Bolingbroke, Spilsby, Lincolnshire, PE23 4EX, UK Introduction Kruger National Park in South Africa covers an area of 18,989 square kilometres, making it one of the largest game reserves in Africa. It has become a major tourist attraction, largely due to the biodiversity within the park which comprises Baobab sandveld, Mopane scrub, Lebombo knobthorn-marula bushveld, mixed acacia thicket, Combretum-silver clusterleaf woodland and riverine forest ecosystems. Kruger supports over 500 species of birds, almost 150 species of mammal (including all of the Big Five), over 100 species of reptile and almost 2000 plant species. Operation Wallacea and WEI have worked in partnership with SANparks to collect biodiversity monitoring data in Kruger. Between 4th July and 12th August 2009, teams of volunteers led by experienced guides conducted bird point counts across Kruger National Park, South Africa. Additionally point counts took place in Nzikazi concession of Kruger from 28th April until 12th August. The aim of this study is to use this dataset to explore patterns of bird diversity in the park and develop recommendations for monitoring birds in Kruger. In this study we use a high-quality field monitoring dataset for an assemblage of birds integrated in GIS with readily available environmental data derived from remote sensing in order to model and validate the distributions of 51 bird species in Kruger. -
Best of Namibia
XDEs Best of Namibia th th Destination: Namibia Duration: 10 Days Dates: 14 – 29 Oct 2016 Finding and watching 16 different Black Rhinos including a young baby in Etosha Finding Caracal, Brown Hyenas, Cape Porcupines and Honey Badgers at night. Over 120 species of birds, including endemic Tractract chats & Cape griffons Great behaviour between Warthogs, Hyenas, Porcupines & Honey Badgers at once Enjoying fantastic safaris in Etosha and cross country through the Namib Desert Visiting the culturally important 6,000 year old rock art of Twyfelfontein Experiencing the stunning dunes at Sossusvlei and Deadvlei and the Namib Desert Seeing many Lions including them fighting over a kill and 3 Cheetah avoiding one Over 40 species of mammals, including Brown Hyena, Black Rhino & Cheetah Finding the endemic Namaqua Chameleon, Palmato Gecko and Horned Viper Tour Leader / Guides Overview Martin Royle (Royle Safaris Tour Leader) Elago (Namibian Tour Leader & Guide) Tommy & Andrew (Namib Desert Tour Guide / Driver) Day 1: Sossuslvei Rehnauldt (Twyfelfontein Guide) Moses (Etosha National Park Night Safari Guide / Driver) Peter & Martin (Okonjima Reserve Guide / Driver) Days 2-3: Swakopmund Participants Day 4: Twyfelfontein Dr. Robert Holmes Mrs. Angela Caroline Holmes Days 5-8: Etosha NP Days 9: Okonjima Day 10: Home Royle Safaris – 6 Greenhythe Rd, Heald Green, Cheshire, SK8 3NS – 0845 226 8259 – [email protected] Day by Day Breakdown Overview Namibia’s landscape is one of the oldest in the world, with deserts dating back over 180 million years and with some of the rocks now isolated in a sea of sand being home to some of Africa’s oldest rock art. -
Adult Brood Parasites Feeding Nestlings and Fledglings of Their Own Species: a Review
J. Field Ornithol., 69(3):364-375 ADULT BROOD PARASITES FEEDING NESTLINGS AND FLEDGLINGS OF THEIR OWN SPECIES: A REVIEW JANICEC. LORENZANAAND SPENCER G. SEALY Departmentof Zoology Universityof Manitoba Winnipeg,Manitoba R3T 2N2 Canada Abstract.--We summarized 40 reports of nine speciesof brood parasitesfeeding young of their own species.These observationssuggest that the propensityto provisionyoung hasnot been lost entirely in brood parasitesdespite the belief that brood parasiticadults abandon their offspringat the time of laying.The hypothesisthat speciesthat participatein courtship feeding are more likely to provisionyoung was not supported:provisioning of young has been observedin two speciesof brood parasitesthat do not courtshipfeed. The function of this provisioningis unknown, but we suggestit may be: (1) a non-adaptivevestigial behavior or (2) an adaptation to ensure adequatecare of parasiticyoung. The former is more likely the case.Further studiesare required to determinewhether parasiticadults commonly feed their genetic offspring. ADULTOS DE AVES PARAS•TICASALIMENTANDO PICHONES Y VOLANTONES DE SU PROPIA ESPECIE: UNA REVISION Sinopsis.--Resumimos40 informes de nueve especiesde avesparasiticas que alimenaron a pichonesde su propia especie.Las observacionessugieren que la propensividadde alimentar a los pichonesno ha sido totalmente perdida en las avesparasiticas, no empecea la creencia de que los parasiticosabandonan su progenie al momento de poner los huevos.La hipttesis de que las especiesque participan en cortejo de alimentacitn, son milspropensas a alimentar los pichonesno tuvo apoyo.Las observacionesde alimentacitn a pichonesse han hecho en dos especiesparasiticas cuyo cortejo no incluye la alimentacitn de la pareja. La funcitn de proveer alimento se desconoce.No obstante,sugerimos que pueda ser: 1) una conducta vestigialno adaptativa,o 2) una adaptacitn parc asegurarel cuidado adecuadode los pi- chonesparasiticos. -
Polistes Wasps and Their Social Parasites: an Overview
Ann. Zool. Fennici 43: 531–549 ISSN 0003-455X Helsinki 29 December 2006 © Finnish Zoological and Botanical Publishing Board 2006 Polistes wasps and their social parasites: an overview Rita Cervo Dipartimento di Biologia Animale e Genetica, University of Florence, via Romana 17, I-50125 Florence, Italy (e-mail: rita.cervo@unifi.it) Received 10 Dec. 2005, revised version received 29 Nov. 2006, accepted 6 May 2006 Cervo, R. 2006: Polistes wasps and their social parasites: an overview. — Ann. Zool. Fennici 43: 531–549. Severe brood care costs have favoured the evolution of cheaters that exploit the paren- tal services of conspecifics or even heterospecifics in both birds and social insects. In Polistes paper wasps, three species have lost worker castes and are dependent on hosts to produce their sexuals, while other species use hosts facultatively as an alternative to caring for their own brood. This paper offers an overview of the adaptations, strategies and tricks used by Polistes social parasites to successfully enter and exploit host social systems. Moreover, it also focuses on the analogous solutions adopted by the well-known brood parasite birds, and stresses the evolutionary convergence between these two phy- logenetically distant taxa. A comparative analysis of life-history patterns, as well as of phylogenetic relationships of living facultative and obligate parasitic species in Polistes wasps, has suggested a historical framework for the evolution of social parasitism in this group. As with avian brood parasites, the analysis of adaptation and counter adaptation dynamics should direct the future approach for the study of social parasitism in Polistes wasps. -
Namibia, Okavango & Victoria Falls Overland I 2017
Namibia, Okavango & Victoria Falls Overland I 4th to 21st March 2017 (18 days) Trip Report Burchell’s Sandgrouse by Gareth Robbins Trip report by compiled by tour leader: Gareth Robbins Tour photos by Judi Helsby and Gareth Robbins Trip Report – RBL Namibia, Botswana & Zambia - Overland I 2017 2 _______________________________________________________________________________________ Tour Summary Our first day of the tour started in Namibia’s capital city, Windhoek. After breakfast, a few of us headed out and birded along some of the acacia thickets just outside of the hotel we were staying at. After two and a half hours of birding, we managed to get a good species count, considering the time spent. Some of the bird highlights we witnessed included Cardinal Woodpecker, Rosy-faced Lovebird, Barred Wren-Warbler, Diederik Cuckoo and Swallow-tailed Bee-eater. By lunchtime, the entire group had arrived and we went to visit Joe’s Beer House, which was on the way to our first official stop of the tour. During lunch, the rain started to pour down and it continued as we made our way to Avis Dam; thankfully, by the time we had arrived, the rain had stopped. One of the first birds to greet us was the beautiful Crimson-breasted Shrike, and in the distance, we could see one African Fish Eagle. At the edge of the car park, we had a good number of acacia- dwelling species arrive, such as Pririt Batis, Yellow-bellied Eremomela, Long-billed Crombec, Ashy Tit, Acacia Pied Barbet, and a Shaft-tailed Whydah. As we walked along the Pririt Batis by Gareth Robbins dam wall, we saw Greater Striped Swallows, House and Rock Martins, African Palm Swifts and Little and White- rumped Swifts too! The dam itself had filled up nicely with all the late rain and, due to this, we managed to get a look at South African Shelduck, Red-knobbed Coots, Red-billed Teal, Black- necked Grebes, as well as a Wood Sandpiper and a few Cape Wagtails. -
Does Nest Sanitation Elicit Egg Rejection in an Open‑Cup Nesting Cuckoo Host Rejecter? Tongping Su1,2 , Chanchao Yang2 , Shuihua Chen1* and Wei Liang2*
Su et al. Avian Res (2018) 9:27 https://doi.org/10.1186/s40657-018-0119-4 Avian Research RESEARCH Open Access Does nest sanitation elicit egg rejection in an open‑cup nesting cuckoo host rejecter? Tongping Su1,2 , Chanchao Yang2 , Shuihua Chen1* and Wei Liang2* Abstract Background: Nest sanitation behavior is one of the most important means to ensure high reproductive efciency. In avian brood parasitism, nest sanitation behavior may be a pre-adaptation of host birds that allows them to identify the parasitic eggs, so that egg discrimination behavior may have evolved from nest sanitation behavior. However, whether nest sanitation behavior could improve egg rejection in cuckoo hosts was inconclusive. Methods: In this study, we investigated the relationship between nest sanitation and egg discrimination behavior in a potential cuckoo host, the Brown-breasted Bulbul (Pycnonotus xanthorrhous) with two experimental groups. In the frst group, we added a blue, non-mimetic egg to the nest of the host, while in the second group we added a blue, non-mimetic egg and a peanut half-shell. Results: The results showed that in the frst group, the probability of rejecting the non-mimetic eggs was 53.8% (n 26 nests). In comparison, all of the Brown-breasted Bulbuls in the second group were able to rapidly remove the peanut= shells from the nest, but only 52.6% (n 19 nests) rejected the non-mimetic eggs. The rejection rates of the non-mimetic eggs in both experimental groups= were not signifcantly diferent. Conclusions: Our study indicated that nest sanitation behavior of Brown-breasted Bulbuls did not infuence their egg recognition and that egg discrimination ability of Brown-breasted Bulbuls was not directly related to nest sanita- tion behavior. -
The Birds of Africa, Comprising All the Species Which Occur in The
: ^rpl, THE BIRDS OF AFRICA, COMPRISING ALL THE SPECIES WHICH OCCUR ETHIOPIAN REGION. BY &C. G. E. SHELLEY, F.Z.S., F.R.G.S., (late gkenadier guaeds), aitthor of "a handbook to the birds of egypt,' "a monograph of the sunbirds," etc. VOL. III. LONDON PUBLISHED FOR THE AUTHOR EY CAVENDISH SQUARE, W. E. H. POETER, 7, PEINCES STEEET, 1902. liw^<J^ ? SEP 18 1902/ ^fiiii CONTENTS. vi. LIST OF PLATES—VOL. IIL Plate XV., Ordei- I. PASSERIFORMES. Suborder II. OSCINES. Section II. ALAUD^. Family VII. MOTACILLID.^. Genus III. MACRONYX. The Long-clawR, as Dr. Bovvdler Sharpe calls them, in the " Birds of South Africa," may be described as heavily-built Pipits. Their feet are extremely large, the hind claw long, and also the tarsus, so that the outstretched feet extend well beyond the end of the tail, although the tail is not abnormally short. This character, together with the bright colouring of the throat, and often of the breast, render the species of this genus easily recognisable. Anatomically they are Pipits. Type. iMacronyx, Swains. Zool. .Journ, iii. p. .344 (1817) .... M. capensis. KEY TO THE SPECIES. n. Five outer pairs of tail-feathers with white ends ; throat and centre of breast reddish orange capensis. 2. h. Four outer pairs of tail-feathers with white ends ; no shade of red on the throat or breast. «^. Throat and some of the breast bright lemon yellow. «2. Smaller ; wing less than 4 inches ; upper croceus. parts paler ; less brown on the breast V b^. Larger; wing 4-2 to 4-4; upper parts darker ; more brown on the breast . -
Why Cuckoos Should Parasitize Parrotbills by Laying Eggs Randomly
Yang et al. Avian Research (2015) 6:5 DOI 10.1186/s40657-015-0014-1 REVIEW Open Access Why cuckoos should parasitize parrotbills by laying eggs randomly rather than laying eggs matching the egg appearance of parrotbill hosts? Canchao Yang1, Fugo Takasu2, Wei Liang1* and Anders P Møller3 Abstract The coevolutionary interaction between cuckoos and their hosts has been studied for a long time, but to date some puzzles still remain unsolved. Whether cuckoos parasitize their hosts by laying eggs randomly or matching the egg morphs of their hosts is one of the mysteries of the cuckoo problem. Scientists tend to believe that cuckoos lay eggs matching the appearance of host eggs due to selection caused by the ability of the hosts to recognize their own eggs. In this paper, we first review previous empirical studies to test this mystery and found no studies have provided direct evidence of cuckoos choosing to parasitize host nests where egg color and pattern match. We then present examples of unmatched cuckoo eggs in host nests and key life history traits of cuckoos, e.g. secretive behavior and rapid egg-laying and link them to cuckoo egg laying behavior. Finally we develop a conceptual model to demonstrate the egg laying behaviour of cuckoos and propose an empirical test that can provide direct evidence of the egg-laying properties of female cuckoos. We speculate that the degree of egg matching between cuckoo eggs and those of the host as detected by humans is caused by the ability of the hosts to recognize their own eggs, rather than the selection of matching host eggs by cuckoos. -
Bird Surveys in the Gamba Complex of Protected Areas, Gabon
Bird Surveys in the Gamba Complex of Protected Areas, Gabon George ANGEHR1, Brian SCHMIDT2, Francis NJIE3, Patrice CHRISTY4, Christina GEBHARD2, Landry TCHIGNOUMBA5 and Martin A.E. OMBENOTORI6 1 Introduction status of protected areas within the complex was revised, and two areas, Loango and Moukalaba- Approximately 2,100 species of birds are known from Doudou, were upgraded to National Parks. An analy- Africa south of the Sahara. Gabon is fairly well known sis by BirdLife International (Christy 2001) found the ornithologically, the first collections having been made Gamba Complex to qualify as one of Gabon’s six by du Chaillu as early as the 1850s. To date, 678 Important Bird Areas (IBAs). Important Bird Areas species have been recorded in the country (Christy are areas that have been determined to be most impor- 2001), or about 30% of the total known for sub- tant for the conservation of birds at the global level, Saharan Africa. Gabon’s bird diversity is relatively lim- based on the distribution of endangered, endemic, ited compared to some other Afrotropical countries, habitat-restricted, and congregatory species. such as Cameroon, which has more than 900 species. Despite its importance, there has been relatively lit- The main factors involved include its relatively small tle published ornithological work on the Gamba size and lack of habitat and topographic diversity. The Complex. Sargeant (1993) was resident at Gamba for natural vegetation of most of Gabon is lowland ever- five years and compiled a bird list for the immediate green and semi-evergreen forest, with only limited area, and as well as lists for other localities within the areas of savanna in the east and south, and its maxi- Complex, including Rabi, the Rembo (River) Ndogo, mum elevation is 1,575 m, compared to 4,095 m for and the east side of the Moukalaba Faunal Reserve, Cameroon. -
This Thesis Has Been Submitted in Fulfilment of the Requirements for a Postgraduate Degree (E.G. Phd, Mphil, Dclinpsychol) at the University of Edinburgh
This thesis has been submitted in fulfilment of the requirements for a postgraduate degree (e.g. PhD, MPhil, DClinPsychol) at the University of Edinburgh. Please note the following terms and conditions of use: This work is protected by copyright and other intellectual property rights, which are retained by the thesis author, unless otherwise stated. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the author. The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the author. When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given. Organisation & Development of Anti-Predator Behaviour in a Cooperative Breeder James R.S. Westrip Supervised by: Dr. Matthew Bell (principal supervisor) and Dr. Per Smiseth A thesis submitted in application for the degree of Doctor of Philosophy from The University of Edinburgh, School of Biological Sciences 2016 Author’s Declaration I, James R.S. Westrip, declare that; a) this thesis has been composed by myself, and b) either that the work is my own, or, where I have been a member of a research group, that I have made a substantial contribution to the work, such contribution being clearly indicated, and c) that the work has not been submitted for any other degree or professional qualification except as specified, and d) any included publications are my own work, except where indicated throughout the thesis, and summarised and clearly identified below*.