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Bijdragen tot de Dierkunde, 56 (2): 181-204 — 1986 Microscopic identification of feathers and feather fragments of Palearctic birds by Tim G. Brom Institute of Taxonomic Zoology (Zoologisch Museum), University of Amsterdam, P.O. Box 20125, 1000 HC Amsterdam, The Netherlands much better and Abstract a assessment of the problem could suggest the most adequate preventive Using light microscopy, a method has been developed for measures. the identification of feathers and feather fragments col- of lected after collisions between birds and aircraft. Charac- LaHam (1967) started the application of the barbules of feathers described for 22 ters downy are microscopic investigation of scrapings collected orders of birds. The of in combination with the use a key of amino from engines, combined with the use macroscopic method of comparing feathers with bird skins acid of and able analysis protein residues, was in a museum collection results in identificationto order or to bird so that defective family level in 97% of the analysed bird strikes. Applica- diagnose strikes, could be into those tion of the method to other fields of biological research engines rapidly separated is discussed. including taxonomy due to either bird strikes or mechanical failures. The microscopic structure of feathers was Résumé first studied by Chandler (1916). He described of feathers of North the structure pennaceous Une méthode utilisant la microscopie optique a été mise l’identification des des American and found differences à point pour plumes et fragments birds, large de collectés des collisions oiseaux plume après entre et between different taxa. He also examined the avions. On décrit les caractères des barbules duveteuses downy barbules of a few species and provided des 22 ordres d’oiseaux. -
WILDLIFE JOURNAL SINGITA GRUMETI, TANZANIA for the Month of April, Two Thousand and Nineteen
Photo by George Tolchard WILDLIFE JOURNAL SINGITA GRUMETI, TANZANIA For the month of April, Two Thousand and Nineteen Temperature Rainfall Recorded Sunrise & Sunset Average minimum: 19°C Faru Faru 47 mm Sunrise 06:40 Average maximum: 29°C Sabora 53 mm Sunset 18:40 Minimum recorded: 17°C Sasakwa 162 mm Maximum recorded: 34.3°C April has been another lovely month, packed full of exciting moments and incredible wildlife viewing. April is usually an incredibly wet month for us here in northern Tanzania, however this year we have definitely received less rain than in years gone by. Only at the end of the month have we seen a noticeable change in the weather and experienced our first heavy downpours. Thankfully there seems to have been just enough to keep the grasses looking green and although the heavy rains have arrived late, an encouraging green flush is spreading across the grasslands. Resident herds of topi, zebra, buffalo, Thompson’s gazelle, eland, Grant’s gazelle and impala are flourishing as usual and have remained as a great presence especially out on the Nyati Plain and the Nyasirori high ground. Reports of the migratory wildebeest were received towards the end of the month, and on the 27th we glanced from the top of Sasakwa Hill to see mega-herds of wildebeest, to the south of our border with the National Park, streaming onto the grasslands at the base of the Simiti Hills. We sit in anticipation and wonder where the great herds will move next. Cat sightings have been great this month, again, despite the long seeding grasses. -
Sun-Bathing As a Thermo-Regulatory and in Birds
SHORT COMMUNICATIONS SUN-BATHING AS A THERMO- REGULATORY AID IN BIRDS TOM J. CADE Section of Ecology and Systematics Cornell University Ithaca, New York 14850 In their study of the Roadrunner (Gcococcl~x califor- for thermoregulation in cold air without resorting ?o nianus), Ohmart and Lasiewski ( 1971) provided a special sun-bathing posture (Hamilton and Heppner another example of a bird that supplements endo- 1967; Lustick 1969, 1971; Heppner 1970). thermy with absorption of solar radiation at low air Ohmart and Lasiewski never observed their Road- temperatures, but they did not give an entirely runners sun-bathing when the ambient temperature convincing proof of a heliothermic function for sun- was above the birds ’ lower critical temperature, but bathing per se. To do so, they would have to show a many birds do sun-bathe at high ambient tempera- difference between sun-bathing and normally postured tures. I had this fact dramatically brought to my Roadrunners under the same conditions of ambient attention during a visit to the Los Angeles Zoo on temperature and insolation, e.g., a faster rate of 18 August 1969. Shortly after 16:00, the slanting warming from hypothermia or a lower rate of metab- rays of the midafternoon sun began to penetrate olism for sunning birds. Other birds utilize solar through the sides of the roofed aviaries. There was radiation and thereby reduce their energy expenditure a sudden explosion of sun-bathing activity by a wide FIGURE 1A. A e-year old Bateleur (Terathopius ecaudatus) sunning in natural light on a hot January after- noon in the austral summer, Pretoria, South Africa, 1966. -
Eagle Hill, Kenya: Changes Over 60 Years
Scopus 34: 24–30, January 2015 Eagle Hill, Kenya: changes over 60 years Simon Thomsett Summary Eagle Hill, the study site of the late Leslie Brown, was first surveyed over 60 years ago in 1948. The demise of its eagle population was near-complete less than 50 years later, but significantly, the majority of these losses occurred in the space of a few years in the late 1970s. Unfortunately, human densities and land use changes are poor- ly known, and thus poor correlation can be made between that and eagle declines. Tolerant local attitudes and land use practices certainly played a significant role in protecting the eagles while human populations began to grow. But at a certain point it would seem that changed human attitudes and population density quickly tipped the balance against eagles. Introduction Raptors are useful in qualifying habitat and biodiversity health as they occupy high trophic levels (Sergio et al. 2005), and changes in their density reflect changes in the trophic levels that support them. In Africa, we know that raptors occur in greater diversity and abundance in protected areas such as the Matapos Hills, Zimbabwe (Macdonald & Gargett 1984; Hartley 1993, 1996, 2002 a & b), and Sabi Sand Reserve, South Africa (Simmons 1994). Although critically important, few draw a direct cor- relation between human effects on the environment and raptor diversity and density. The variables to consider are numerous and the conclusions unworkable due to dif- ferent holding-capacities, latitude, land fertility, seasonality, human attitudes, and different tolerances among raptor species to human disturbance. Although the concept of environmental effects caused by humans leading to rap- tor decline is attractive and is used to justify raptor conservation, there is a need for caution in qualifying habitat ‘health’ in association with the quantity of its raptor community. -
Hornbills of Borneo
The following two species can be easily confused. They can be recognized If you want to support Hornbill Conservation in Sabah, please contact from other hornbill species by the yellow coloration around the head and neck in Marc Ancrenaz at Hutan Kinabatangan Orangutan Conservation Project: the males. The females have black heads and faces and blue throat pouches. [email protected] HORNBILLS OF BORNEO Wrinkled hornbill (Aceros corrugatus): A large, mainly black hornbill whose tail is mostly white with some black at the base. Males have a yellow bill and more prominent reddish casque while females have an all yellow bill and casque. SABAH MALAYSIA The presence of hornbills in the Kinabatangan area is an indication that the surrounding habitat is healthy. Hornbills need forests for nesting and food. Forests need hornbills for dispersal of seeds. And the local people need the forests for wood Wreathed hornbill (Rhyticeros undulatus): A large, primarily black hornbill products, clean water and clean air. They are all connected: whose tail is all white with no black at the base. Both sexes have a pale bill with a small casque and a dark streak/mark on the throat pouch. people, hornbills and forests! Eight different hornbill species occur in Borneo and all are found in Kinabatangan. All are protected from hunting and/or disturbance. By fostering an awareness and concern of their presence in this region, hornbill conservation will be ensured for future generations. Credits: Sabah Forest Department, Sabah Wildlife Department, Hutan Kinabatangan Orangutan Conserva- tion Project (KOCP), Hornbill Research Foundation, Chester Zoo, Woodland Park Zoo. -
Smithsonian Miscellaneous Collections
SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 131, NUMBER 9 BREEDING AND OTHER HABITS OF CASQUED HORNBILLS (BYCANISTES SUBCYLINDRICUS) (With 6 Plates) By LAWRENCE KILHAM Bethesda, Md. (Publication 4259) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION NOVEMBER 8, 1956 THE LORD BALTIMORE PRESS, INC. BALTIMORE, MD., U. S. A. PREFACE I went to Uganda at the invitation of the East African High Com- mission to carry on virus research as a visiting scientist at the Virus Research Institute, Entebbe, where I worked from August 1954 until mid-May 1955. My ornithological observations were made as an ama- teur in the early mornings and evenings, and on weekends. It had been my hope to study some particular field problem in addition to making a general acquaintance with African bird life. The nature of the prob- lem was determined soon after my arrival. In my bird notes, black- and-white casqued hornbills [Bycanistes suhcylindricits (Sclater)] soon took up more pages than any other species. They came to our garden frequently. In addition, a pair of them roosted and carried on courtship activities in a tree above our house. When I discovered a concentration of hornbill nests in the Mpanga Research Forest, it was apparent that I had an unusual opportunity to study the natural history of casqued hornbills. Present studies did not begin until many females were already walled in. A few pairs of late-nesting hornbills, however, enabled me to witness the beginning stages of nesting ac- tivity. Observations on 16 nesting pairs gave, in the aggregate, a rounded picture of breeding and other habits of these birds. -
A Multi-Gene Phylogeny of Aquiline Eagles (Aves: Accipitriformes) Reveals Extensive Paraphyly at the Genus Level
Available online at www.sciencedirect.com MOLECULAR SCIENCE•NCE /W\/Q^DIRI DIRECT® PHYLOGENETICS AND EVOLUTION ELSEVIER Molecular Phylogenetics and Evolution 35 (2005) 147-164 www.elsevier.com/locate/ympev A multi-gene phylogeny of aquiline eagles (Aves: Accipitriformes) reveals extensive paraphyly at the genus level Andreas J. Helbig'^*, Annett Kocum'^, Ingrid Seibold^, Michael J. Braun^ '^ Institute of Zoology, University of Greifswald, Vogelwarte Hiddensee, D-18565 Kloster, Germany Department of Zoology, National Museum of Natural History, Smithsonian Institution, 4210 Silver Hill Rd., Suitland, MD 20746, USA Received 19 March 2004; revised 21 September 2004 Available online 24 December 2004 Abstract The phylogeny of the tribe Aquilini (eagles with fully feathered tarsi) was investigated using 4.2 kb of DNA sequence of one mito- chondrial (cyt b) and three nuclear loci (RAG-1 coding region, LDH intron 3, and adenylate-kinase intron 5). Phylogenetic signal was highly congruent and complementary between mtDNA and nuclear genes. In addition to single-nucleotide variation, shared deletions in nuclear introns supported one basal and two peripheral clades within the Aquilini. Monophyly of the Aquilini relative to other birds of prey was confirmed. However, all polytypic genera within the tribe, Spizaetus, Aquila, Hieraaetus, turned out to be non-monophyletic. Old World Spizaetus and Stephanoaetus together appear to be the sister group of the rest of the Aquilini. Spiza- stur melanoleucus and Oroaetus isidori axe nested among the New World Spizaetus species and should be merged with that genus. The Old World 'Spizaetus' species should be assigned to the genus Nisaetus (Hodgson, 1836). The sister species of the two spotted eagles (Aquila clanga and Aquila pomarina) is the African Long-crested Eagle (Lophaetus occipitalis). -
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. -
The Martial Eagle Terror of the African Bush
SCOOP! 4 THE MARTIAL EAGLE TERROR OF THE AFRICAN BUSH The martial eagle is a A CLOSE ENCOUNTER WITH A NEAR-LEGENDARY very large eagle. In total AND SEVERELY THREATENED PREDATOR length, it can range from 78 to 96 cm (31 to 38 in), with a wingspan from 188 to 260 cm (6 ft 2 in to 8 ft 6 in). 5 The martial eagle is one of the world's most powerful avian predators. Prey may vary considerably in size but for the most part, prey weighing less than 0.5 kg (1.1 lb) are ignored, with the average size of prey being between 1 and 5 kg (2.2 and 11.0 lb). TEXT BY ANDREA FERRARI PHOTOS BY ANDREA & ANTONELLA FERRARI uring a lifetime of explorations we have met and mammals, large birds and reptiles. An inhabitant of occasion - while it was gorging itself on a fresh duck or photographed the huge, intimidating martial eagle wooded belts of otherwise open savanna, this species has goose kill by a waterhole in Etosha NP, Namibia - was PolemaetusD bellicosus quite a few times - despite being sadly shown a precipitous decline in the last few centuries rather special. Luckily most martial eagles don’t seem too currently severely threatened and not really common due to a variety of factors as it is one of the most persecuted shy when feasting (if properly approached, of course - we anywhere, it still is relatively easy observing one in the bird species in the world. Due to its habit of taking livestock had already photographed another eating a mongoose in African plains. -
Bird Checklists of the World Country Or Region: Ghana
Avibase Page 1of 24 Col Location Date Start time Duration Distance Avibase - Bird Checklists of the World 1 Country or region: Ghana 2 Number of species: 773 3 Number of endemics: 0 4 Number of breeding endemics: 0 5 Number of globally threatened species: 26 6 Number of extinct species: 0 7 Number of introduced species: 1 8 Date last reviewed: 2019-11-10 9 10 Recommended citation: Lepage, D. 2021. Checklist of the birds of Ghana. Avibase, the world bird database. Retrieved from .https://avibase.bsc-eoc.org/checklist.jsp?lang=EN®ion=gh [26/09/2021]. Make your observations count! Submit your data to ebird. -
Birding Tour to Ghana Specializing on Upper Guinea Forest 12–26 January 2018
Birding Tour to Ghana Specializing on Upper Guinea Forest 12–26 January 2018 Chocolate-backed Kingfisher, Ankasa Resource Reserve (Dan Casey photo) Participants: Jim Brown (Missoula, MT) Dan Casey (Billings and Somers, MT) Steve Feiner (Portland, OR) Bob & Carolyn Jones (Billings, MT) Diane Kook (Bend, OR) Judy Meredith (Bend, OR) Leaders: Paul Mensah, Jackson Owusu, & Jeff Marks Prepared by Jeff Marks Executive Director, Montana Bird Advocacy Birding Ghana, Montana Bird Advocacy, January 2018, Page 1 Tour Summary Our trip spanned latitudes from about 5° to 9.5°N and longitudes from about 3°W to the prime meridian. Weather was characterized by high cloud cover and haze, in part from Harmattan winds that blow from the northeast and carry particulates from the Sahara Desert. Temperatures were relatively pleasant as a result, and precipitation was almost nonexistent. Everyone stayed healthy, the AC on the bus functioned perfectly, the tropical fruits (i.e., bananas, mangos, papayas, and pineapples) that Paul and Jackson obtained from roadside sellers were exquisite and perfectly ripe, the meals and lodgings were passable, and the jokes from Jeff tolerable, for the most part. We detected 380 species of birds, including some that were heard but not seen. We did especially well with kingfishers, bee-eaters, greenbuls, and sunbirds. We observed 28 species of diurnal raptors, which is not a large number for this part of the world, but everyone was happy with the wonderful looks we obtained of species such as African Harrier-Hawk, African Cuckoo-Hawk, Hooded Vulture, White-headed Vulture, Bat Hawk (pair at nest!), Long-tailed Hawk, Red-chested Goshawk, Grasshopper Buzzard, African Hobby, and Lanner Falcon. -
Secrets of Chimanimani Revealed in Biodiversity Surveys 7 August 2019, by Sarah Pocock
Secrets of Chimanimani revealed in biodiversity surveys 7 August 2019, by Sarah Pocock species. The second, more forested lowland area, did unfortunately show signs of human disturbance and encroachment by an invasive South American plant. Sadly, this forest habitat, found in the Moribane zone, is becoming increasingly rare in Mozambique, with only pockets representing some of the last of its type still left standing. Credit: Millie Kerr/FFI Despite not boasting the fame of the Serengeti or Kruger National Park, Chimanimani, straddling the Mozambican and Zimbabwean border, is an area like no other. Diverse landscapes and unique plant and animal species coexist together in this comparatively unheralded region of southern Africa. Chimanimani’s mountainous landscapes are home to many fascinating species. Credit: Millie Kerr/FFI Botanists hail Chimanimani as a plant hotspot, with previous studies of highland flora revealing exceptionally high levels of endemism, but rather less is known of Chimanimani's animal and Even so, the surveys documented almost 1,100 lowland plant communities; a scientific knowledge species, including some new records for gap existed that needed to be filled. Mozambique and several potential new additions to science. In response to this, in late 2018, Fauna & Flora International (FFI), along with scientists and Ungulates, bats, primates and rodents contributed students from a range of international partner to the 42 species of mammal recorded by the team. organisations, spent two weeks conducting Birds included the globally vulnerable martial eagle biodiversity surveys of two of Chimanimani's lesser- and southern ground-hornbill, with species totalling studied areas. 231 over the surveys.