List Of Birds Research Articles

A Review on Bird Classification on Different Dataset

A Review on Bird Classification on Different Dataset

Bird community of upper-montane rupestrian fields in South of Minas Gerais State, Southeastern Brazil

Studies about the birds of rupestrian fields in the south of Minas Gerais State in Southeastern Brazil are incomplete, although this region is ornithologically well studied. This bird community has closely associated ecology with fields and the most endangered species of the Cerrado domain. The objective of this manuscript is to create a list of birds which occur in the rupestrian fields of seven municipalities in the south of Minas Gerais State, and further to analyze the birds’ distribution, the endangered species (and their conservation status), and generate bases for future conservation actions. We evaluated seven cities in the south of Minas Gerais State between 2012 and 2018 by using binoculars and cameras. We found a high richness in relation to other open areas, with the Tyrannidae and Trochilidae families being the most representative. We highlight the endangered species in the Cerrado domain which of these species are closely linked to rupestrian fields. The composition is similar to closer areas, with exception to São Thomé das Letras city because it suffers an influence of mining areas. We suggest creating a wildlife protected area to preserve and conserve a great area of rupestrian fields and consequently the associated biota, especially the bird communities

Traditional ecological knowledge of the bird traders on bird species bird naming, and bird market chain: A case study in bird market Pasty Yogyakarta, Indonesia

Abstract. Iskandar J, Iskandar BS, Mulyanto D, Alfian RL, Partasasmita R. 2020. Traditional ecological knowledge of the bird traders on bird species bird naming, and bird market chain: A case study in bird market Pasty Yogyakarta, Indonesia. Biodiversitas 21: 2586-2602. The bird-keeping in Indonesian society has been popular for a long time. Because the demand for birds has increased in an urban area, plenty of bird species are predominantly traded in urban bird markets. Bird market is a place for selling and buying various birds. The rise of bird trade in the bird markets in many regions of Indonesia has provided social and economic benefits for many people. But in addition to providing many benefits, the plentiful bird trade in bird markets that are not well managed is very worrying about the extinction of various bird species in rural ecosystems. This paper aimed to elucidate the Traditional Ecological Knowledge (TEK) of bird traders on bird species traded, bird naming and folk classification of bird species, and market chain system based on a case study in bird market of Pasty, Yogyakarta. The method used in this study was a qualitative method with the ethnoornithological approach. The results of the study showed that it was documented 106 bird species representing 40 families traded in the Pasty bird market. The common local names and folk bird classification are culturally based on bird vocalization, special colors, morphological characteristics, special habitats, involvement in bird song contests, flying racing competitions, selling prices, and wilderness. Most wild and semi-bird species are traded in the Pasty bird market are predominantly supplied from a rural ecosystem.

Scientific encounters between Colombia and the United States analyzed through publishing practices in Caldasia journal: The birds of the Republic of Colombia as a publishing event

In 1948, American ornithologist Rodolphe Meyer de Schauensee began publishing what would be the most complete list of birds from Colombia that had ever been printed up to that time. His work was called The Birds of the Republic of Colombia (TBRC), and at the invitation of Armando Dugand, the director of the Instituto de Ciencias Naturales at the Universidad Nacional de Colombia and of the Caldasia journal, this work was exclusively published in the journal in five installments spanning four years. This paper analyzes the publishing aspects that particularly influenced the process of carrying out this work, with the objective of showing that scientific practices and publishing practices are not two absolutely separate domains. The circuit of communication present in TBRC's development is analyzed, specifically the efforts of the editor, printer and author to bring this work to fruition. This analysis demonstrates the following: (i) how the scientific interests of Meyer and the Instituto de Ciencias Naturales converge, (ii) the contradictions between scientific interests that promoted the publication of TBRC and the publishing rationale of a journal and (iii) how unforeseen publishing issues of the time, such as the increase in printing costs due to inflation, influenced the final structure of the work.

Classification of drones and birds using convolutional neural networks applied to radar micro‐Doppler spectrogram images

This study presents a convolutional neural network-based drone classification method. The primary criterion for a high-fidelity neural network-based classification is a real dataset of large size and diversity for training. The first goal of the study was to create a large database of micro-Doppler spectrogram images of in-flight drones and birds. Two separate datasets with the same images have been created, one with RGB images and others with greyscale images. The RGB dataset was used for GoogLeNet architecture-based training. The greyscale dataset was used for training with a series of architecture developed during this study. Each dataset was further divided into two categories, one with four classes (drone, bird, clutter and noise) and the other with two classes (drone and non-drone). During training, 20% of the dataset has been used as a validation set. After the completion of training, the models were tested with previously unseen and unlabelled sets of data. The validation and testing accuracy for the developed series network have been found to be 99.6 and 94.4%, respectively, for four classes and 99.3 and 98.3%, respectively, for two classes. The GoogLenet based model showed both validation and testing accuracies to be around 99% for all the cases.

Gadolinium-enhanced magnetic resonance imaging in shoulders contributes accurate diagnosis and predicting recurrence to patients with polymyalgia rheumatica.

We aimed to evaluate whether gadolinium-enhanced magnetic resonance imaging (MRI) in shoulders can contribute to more accurate diagnosis and prediction of recurrence in patients with polymyalgia rheumatica (PMR). Gadolinium-enhanced MRI and ultrasonography (US) in shoulders were performed in the patients who had bilateral shoulders pain and fulfilled the Bird's Classification Criteria between June 2012 and June 2018. PMR was clinically diagnosed by at least two rheumatologists. MRI and US findings assessed by independent radiologists were compared between the PMR or non-PMR patients. PMR patients were treated with 20 mg/day of prednisolone and were followed-up until June 2019 to determine any recurrences of the disease. PMR was diagnosed in 58 of 137 patients received gadolinium-enhanced MRI and US examinations. Enhancement of joint capsule, enhancement of rotator cuff tendon and focal bone oedema in humerus heads were frequently found in the PMR patients. If the three findings were used in combination to diagnose PMR, MRI had 76% sensitivity and 85% specificity, higher compared to US findings, which had 50% sensitivity and 72% specificity. During follow-up, PMR recurred in 24 patients. Patients with recurrent PMR were younger in age, had less enhancement of rotator cuff tendon and more synovial hypertrophy findings on their MRI. Gadolinium-enhanced MRI could display capsulitis, rotator cuff tendonitis and focal bone oedema in humerus heads that was sensitive and specific to patients with PMR, improving diagnostic accuracy in PMR. Rotator cuff tendonitis and synovial hypertrophy on MRI could help predict recurrence in PMR.

The Avifauna of Lake Seyfe

Turkey has a great ornithological importance, due to its geographical location, topography, wide territory and different climatic types. From a biodiversity perspective, wetlands are one of the most important areas. Lake Seyfe is one of the important wetlands with economic and ecological value. After being declared a Natural Protected Area in 1989, Lake Seyfe, which gained the status of Natural Protection Area in 1990 and finally declared Ramsar Site in 1994, is extremely important for birds. The lake meets 3 out of 9 Criteria for Identifying Wetlands of International Importance. The research aims to determine bird species of Lake Seyfe by gathering the information contained in the literature covering all observations made in the following years, in addition to the regular field studies conducted weekly between 1996 and 1998. Therefore, a list of birds obtained from all observations made between 1996-2019 has been created. As a result, 26 orders, 57 families, 242 species and 4 subspecies were identified in the site. 20 of the recorded species are globally endangered according to the IUCN red list criteria. Lake Seyfe, an internationally important wetland, is also an important feeding and visiting place for birds during migration.

List of Birds Sigthed on Livestock Farms in Sucre, Colombia

The rural areas of the Department of Sucre, Colombia, have a considerable bird species richness, but there are not many reports on this. In this work, we classify and record the species we sighted in nine cattle farms in the region. We obtained information on the relative abundance of each species (frequency of observation about the total sample), and biotopes where we observe them. We use chi square to know if there was an association between these parameters and also about to the food guild to which the species belong. We obtained the latter in the specialized bibliography. We use the Sorensen Index, to determine the degree of similarity of the communities of species in each biotope. We spot 103 species of birds. The best-represented order was Passeriformes, with eleven families and 36 species. Most of the species were abundant, and the biotope with the highest sighting was the open area, although many species were present in more than one biotope. We found no association between the abundance of species and the biotope in which we observed them, nor about the food guild. Among the species sighted, 21 are migratory, mostly wintering with permanent breeding populations. In this paper we discuss the importance of livestock farms for wildlife conservation.

Fishery bycatch is among the most important threats to the European population of Greater ScaupAythya marila

SummaryFor Greater ScaupAythya marila, classified as ‘Vulnerable’ on the European Red List of Birds, the south-western Baltic Sea is one of the most important wintering sites in Europe. In this area, a large concentration of gillnet fishery temporally overlaps periods of the most abundant occurrence of foraging diving birds. The aim of the article is to show how bycatch can impact the population of a diving duck. To assess this, we calculate the Potential Biological Removal (PBR) for the studied Greater Scaup population and we model the population change according to age-structured matrix models. Summing all the available recent figures on Greater Scaup bycatch in north-west Europe yields an estimated mean annual total of 3,991 individuals (2% of the flyway population). For a baseline stable population, an age-structured matrix model indicates that at this bycatch level the Greater Scaup population that winters in north-west Europe will decrease by 36% over the next 30 years, qualifying the status of the population as ‘Vulnerable’ according to IUCN criteria. As this population also experiences decline prior to bycatch, this decrease will be 57%, which qualifies the status as ‘Endangered’. PBR as an indicator of population vitality does not work in our case because the PBR-informed allowable bycatch values have a significantly negative impact on the population. Our results indicate unambiguously that fishery bycatch is among the most important threats responsible for the Greater Scaup’s decline. While recent data suggest that some improvement has taken place in the species’ status over the last 10 years, measures to protect Greater Scaup from bycatch are required. The solution should involve the prohibition of gillnet fishing in selected key sites and the use of mitigation techniques in other areas.

A review of wild and synantropic birds recorded as reservoirs of avian influenza viruses in Bulgaria

The aim of the present review is to summarise the information about the species diversity of wild and synanthropic birds, which have been recorded as reservoirs of influenza in Bulgaria until 2018. A total of 17 species of wild and synantropic birds were reported. They belong to 16 genera, 11 families and 10 orders of the class Aves. A list of wild and synantropic birds – potential reservoirs of influenza in Bulgaria is also presented.

Spatial and Temporal Changes in Falconiformes and Strigiformes Nutrition: Causes, Significance, Consequences

Spatial and temporal changes in the nutrition of four species of diurnal birds of prey and six species of owls, traditionally referred to polyphages (generalists), are considered. Based on the literature data and our own observations, we have provided a classification of birds of prey according to their feeding and nest building characteristics. The main ways of interaction of these aspects of raptors` life and the importance of their understanding for the effective planning and development of measures for the conservation of the studied species are presented

Bird diversity in the coastal talukas of Sindhudurg District, Maharashtra, India

The list of birds of Sindhudurg coastal district was compiled based on primary and secondary information. All observations were made along the Sindhudurg coast, i.e., from Terekhol to Vijaydurg. Wetland birds were recorded during sampling while terrestrial birds were recorded opportunistically. Besides, we also collated bird occurrence records from published literature (including grey literature and online resources) to prepare a comprehensive list of birds for Sindhudurg coast. During our study, we recorded 283 species, and 24 more species were compiled from secondary sources. Altogether, 307 species belonging to 78 families and 22 orders were recorded from the Sindhudurg coast. Order Passeriformes was dominant with 111 species. Among the 307 species, four species are endemic to the Western Ghats. Three species of vultures had been reported earlier but two were not encountered in recent years. Great Knot (EN), Woolly-necked Stork (VU) and 14 other species (NT) fall under various threat categories of IUCN. Species richness was higher in Vengurla (256) followed by Malvan (247) and Devgad talukas. Construction of homestays, unregulated tourism in coastal areas, and conversion of natural habitats to meet increasing tourism are the major threats to the coastal avifauna of the district. A high species richness of birds in Sindhudurg coast is attributed to the availability of a wide array of habitats (coastal to woodlands with different degrees of anthropogenic disturbances). Considering the high species richness of birds and livelihood dependency of humans on the coastal zones, a few estuaries namely Mochemad, Karli and Mitbav estuaries may be recognized as community/ conservation reserve to manage the ecosystem sustainably for long-term conservation of these estuaries and sub-habitats therein. Also, those sites can be perceived as Important Bird and Biodiversity Areas of IBCN as they fulfill the IBA criteria.

Radical changes in the avifauna of a Sydney suburb, 1971–2014

We document changes in the avifauna of Longueville, a residential suburb of Sydney, between 1971–73 and 1977–79 based on daily bird lists, and make comparisons with the present avifauna based on surveys in 2013–14. Of the 31 most common native terrestrial bird species, 17 were ‘decreasers’, present in 1971–73 but not recorded in 2013–14 (although 16 of them were recorded in a large bushland remnant 5 km away), and 14 were ‘increasers’, seven of which were absent or very rare in 1971–73. Eleven species decreased during the 1970s, and six species afterwards. Eight species increased during the 1970s and six species afterwards. The decreasers were predominantly small insectivores and nectarivores. The increasers were of three main types: medium to large carnivores, large frugivores or granivores, and medium-sized nectarivores. Two of the nectarivores, the noisy miner (Manorina melanocephala) and rainbow lorikeet (Trichoglossus haematodus), now dominate the urban bird community of Longueville and are by far the most numerous birds. The increase of both species dates from the late 1970s. The noisy miner is highly aggressive towards other birds and its dramatic increase (it was absent in 1971–73) appears to be the chief cause of the decline of small native birds in Longueville.

A price list of birds collected by Alfred Russel Wallace inserted in The Ibis of 1863

Vol. 5 of The Ibis (1863) contained four loose inserts advertising specimens for sale by the natural history dealer Samuel Stevens. One of these represents the remaining stock of birds obtained by Alfred Russel Wallace during his expedition to the Malay Archipelago in 1854–62. A total of 246 specimens from eight regions were listed, with prices ranging from three to 20 shillings, plus ten specimens priced at more than £1. The most expensive items were a pair of Standardwing Bird-of-paradise Semioptera wallacii, and a fine example of the Twelve-wired Bird-of-paradise Seleucidis melanoleucus. Only one copy of this insert is known to survive, because they appear to have been removed when the volumes were bound and preserved. All 246 specimens are listed according to the original print version, with the addition of current scientific and vernacular names.

Rare birds in Slovenia in 2017 –Slovenian Rarities Committee's Report

Summary This report by the Slovenian Rarities Committee presents records of rare bird species in Slovenia in 2017, with some addenda for previous years. The numbers in brackets refer to the number of records (first number) and individuals (second number) recorded between 1 Jan 1950 and 31 Dec 2016. Since 1 Jan 2013, submission to the Committee has been required for 37 additional species, 17 of which are regional rarities. Records of these species are not numbered, since records from previous years were not collected by the Committee. The Barnacle Goose Branta leucopsis was first recorded in Category A, in addition to previous Category D and E records. Other notable observations were the third record of Red-breasted Goose Branta ruficollis, fifth records of Lammergeier Gypaetus barbatus and Pomarine Skua Stercorarius pomarinus, and seventh records of Greater Blackbacked Gull Larus marinus and Red Phalarope Phalaropus fulicarius. The list of birds recorded in Slovenia (as of 31 Dec 2017) contains 390 species (375 in Category A, 6 in Category B, 9 exclusively in Category C; 4 species are both in Categories A and C). Category D contains 7 species, while Category E contains 39, two of which are classified into Subcategory E*. These two categories are not part of the list.

Are long-term trends in Bewick’s Swan Cygnus columbianus bewickii numbers driven by changes in winter food resources?

SummaryThe north-west European population of Bewick’s SwanCygnus columbianus bewickiideclined by 38% between 1995 and 2010 and is listed as ‘Endangered’ on the European Red List of birds. Here, we combined information on food resources within the landscape with long-term data on swan numbers, habitat use, behaviour and two complementary measures of body condition, to examine whether changes in food type and availability have influenced the Bewick’s Swan’s use of their main wintering site in the UK, the Ouse Washes and surrounding fens. Maximum number of Bewick’s Swans rose from 620 in winter 1958/59 to a high of 7,491 in winter 2004/05, before falling to 1,073 birds in winter 2013/14. Between winters 1958/59 and 2014/15 the Ouse Washes supported between 0.5 and 37.9 % of the total population wintering in north-west Europe (mean ± 95 % CI = 18.1 ± 2.4 %). Swans fed on agricultural crops, shifting from post-harvest remains of root crops (e.g. sugar beet and potatoes) in November and December to winter-sown cereals (e.g. wheat) in January and February. Inter-annual variation in the area cultivated for these crops did not result in changes in the peak numbers of swans occurring on the Ouse Washes. Behavioural and body condition data indicated that food supplies on the Ouse Washes and surrounding fens remain adequate to allow the birds to gain and maintain good body condition throughout winter with no increase in foraging effort. Our findings suggest that the recent decline in numbers of Bewick’s Swans at this internationally important site was not linked to inadequate food resources.

100 Years Ago in the American Ornithologists' Union

There were 126 General Notes published in The Auk in 1921. Of those, only 23% dealt with something other than distribution. Natural history notes with personal stories often accompanied distributional lists of birds. Otherwise, there were reports of behavior (17), including subjects of song, foraging, nesting, and nest parasitism. There were mentions of elements of natural and anthropogenically driven mortality (3). A few reports concerned nomenclature and systematics (8), and less than a handful directly concerned plumage (4). Overall, reports from East of the Mississippi predominated (83). Twenty-four were from the West, 12 from Canada, and 7 either pertained to or came from overseas.

Birds of Nebraska: 2018 Edition

This annotated list of the birds of Nebraska grew gradually out of research associated with my writing of the Birds of the Great Plains: Breeding Species and Their Distribution (Johnsgard, 1979a). It expands and updates an earlier version that was published in 2013 by the University of Nebraska–Lincoln Libraries DigitalCommons’ Zea Books (Johnsgard, 2013a). It has been updated and modified in its current revision to conform with the most recent (2017) major revision of the American Ornithologists’ Society’s Checklist of North American Birds (Chesser et al., 2017). It has also been modified in its current revision to conform very closely to the most recent “Official List of the Birds of Nebraska” by the Nebraska Ornithologists’ Union (Gubanyi, 1997, and later supplements in the Nebraska Bird Review, to 84:138–150). The NOU’s official state list of birds (461 species as of 2017) is based on actual specimen evidence or some other convincing basis of each species’ proven occurrence in the state. That list includes 337 “regular” species, 29 “casual” species, 90 “accidental” species, and 5 extinct or extirpated species. In this edition I have classified 368 of the 461 species of Nebraska birds as ranging in relative frequency of occurrence as “abundant” to “rare.” There are also 61 species considered to be of “accidental” occurrence, having been reliably reported in Nebraska no more than five times, 20 that are considered “extremely rare” or “very rare,” if reported from six to 25 times. There are also three extinct, four extirpated, and five unsuccessfully introduced species. Thirteen hypothetical species of dubious origin or identification are mentioned parenthetically. The text includes more than 123,000 words, nearly 200 literature references, and 19 pages of drawings and maps.

Aves del departamento de Cundinamarca, Colombia: conocimiento, nuevos registros y vacíos de información

The department of Cundinamarca in Colombia is an area with diverse geographic and ecosystemic characteristics, a condition that makes it one of the regions in the country with highest diversity of birds. This study updates the list of birds in the department, as well as identifies changes in composition and gaps of information, through the recopilation of field data developed by the authors from 1990 to 2015, revision of different papers and databases, and consultation of experienced birdwatchers in the region. We found 941 records of bird species, of which 24 are endemic, 72 near endemic, 1 extinct, 39 nationally threatened, 101 migratory, and 45 present local and/or altitudinal migration. Of the total number of records, 701 correspond to the authors in 45 localities (48 are new records for the department). We note that there are gaps of information in departmental boundaries, especially in the region of the Magdalena River valley and Llanos Orientales. However, regions that have been more extensively sampled are not fully inventoried since new species for science are still being found.

Excursion – Belmont, Fiery Creek Diggings area and Bird Lists

Excursion – Belmont, Fiery Creek Diggings area and Bird Lists