Journal of Ornithology

http://link.springer.com/journal/10336

List of Papers (Total 237)

Montagu’s Harrier breeding parameters in relation to weather, colony size and nest protection schemes: a long-term study in Extremadura, Spain

On the basis of long-term (2001–2017) and extensive data (> 1700 breeding attempts), we assess factors influencing breeding parameters in Montagu’s Harrier (Circus pygargus), a medium-sized ground-nesting semi-colonial raptor breeding in cereal fields, in a study area in its core distribution range (Extremadura, Spain). We evaluated annual and long-term variation in breeding...

The structure and context of male and female song in White-throated Dippers

Female song in birds is more widespread than previously thought but remains poorly studied. Relatively few researchers have compared the structure and function of female song with that of conspecific males, especially in non-duetting species. Here we investigate male and female song in the White-throated Dipper (Cinclus cinclus; hereafter ‘Dipper’), a highly territorial and...

Does cavity reuse affect timing of reproduction and fledgling success in the Black Woodpecker?

Nesting in old cavities may be adaptive for birds as it may offer an advantage of earlier laying and higher fitness through more recruiting offspring. Black Woodpeckers frequently use old cavities, which gives the opportunity to test how this behavior affects the timing and the success of reproduction. In this paper, we have tested a prediction that excavating a new cavity causes...

Progression in the bacterial load during the breeding season in nest boxes occupied by the Blue Tit and its potential impact on hatching or fledging success

The Blue Tit Cyanistes caeruleus prefer to use nest boxes to raise their young rather than nests in natural tree cavities. However, nest boxes provide a warm, humid microclimate that is favourable to the growth of rich bacterial communities. In this study we investigated how the bacterial community developed throughout the breeding season and whether it had any effect on egg or...

Temperature and aridity determine body size conformity to Bergmann’s rule independent of latitudinal differences in a tropical environment

Bergmann’s rule, defined as the tendency for endotherms to be larger in colder environments, is a biophysical generalization of body size variation that is frequently tested along latitudinal gradients, even though latitude is only a proxy for temperature variation. We test whether variation in temperature and aridity determine avian body size conformity to Bergmann’s rule...

Unexpected dietary preferences of Eurasian Spoonbills in the Dutch Wadden Sea: spoonbills mainly feed on small fish not shrimp

After an historical absence, over the last decades Eurasian Spoonbills Platalea leucorodia leucorodia have returned to breed on the barrier islands of the Wadden Sea. The area offers an abundance of predator-free nesting habitat, low degrees of disturbance, and an extensive intertidal feeding area with increasing stocks of brown shrimp Crangon crangon, the assumed main prey of P...

Prospects and pitfalls of using feathers as a temporal archive of stress events and environmental pollutants: a review and case study

Methods to assess environmental pollution and stress responses in birds with scarcely invasive or non-invasive sampling are highly sought after in ecology and conservation. For several years now, feathers have been promoted as non-invasive tools to assess stress physiology and environmental pollution in birds. This has mainly been applied in whole feathers, but more recently also...

Indirect evidence for body size reduction in a flightless island bird after human colonisation

Rhynochetos orarius has been described from Holocene fossils as the sister species of the smaller extant Kagu Rhynochetos jubatus, a bird endemic to New Caledonia. However, we argue that there has never been evidence justifying the description of R. orarius. Additionally, for biogeographical reasons it seems unlikely that two Kagu species would have evolved in New Caledonia. We...

Ambient temperature impacts the effect of experimental immunisation of Great Tit and Eurasian Blue Tit females on the PHA response of their offspring

The immune system is a particularly costly activity that competes with other functions of an organism, such as reproduction, although research is lacking on the importance of environmental factors for the parental investment in offspring immunity. This study examines whether ambient temperature impacts the effect of a sheep red blood cell (SRBC) challenge of the adult female’s...

Leukocyte profiles indicate nutritional, but not moulting stress in a migratory shorebird, the Common Snipe (Gallinago gallinago)

The relative ratio of the two main leukocyte types, heterophils (H) and lymphocytes (L), is known to change proportionally to the concentrations of stress hormones in the circulating blood. Thus, analysis of leukocyte profiles serves as a reliable proxy of stress in vertebrates, as high H/L ratios indicate stronger stress response. Moult and migration are among the most...

The importance of post-translocation monitoring of habitat use and population growth: insights from a Seychelles Warbler (Acrocephalus sechellensis) translocation

Translocations are a valuable tool within conservation, and when performed successfully can rescue species from extinction. However, to label a translocation a success, extensive post-translocation monitoring is required, ensuring the population is growing at the expected rate. In 2011, a habitat assessment identified Frégate Island as a suitable island to host a Seychelles...

Hybrids and mixed pairs of Syrian and Great-spotted Woodpeckers in urban populations

The population structures of sympatric Syrian and Great-spotted Woodpeckers (SW and GW, respectively) in urban areas of Poland were investigated with respect to the occurrence of mixed pairs and hybrids. It was estimated that 5.3% of pairs were mixed and that these interspecific pairs mainly comprised SW or hybrid females and GW males. In total, 3.6% of observed individuals and 6...

The breeding performance of raptors in urban landscapes: a review and meta-analysis

Global urbanisation is rapidly increasing and can have profound impacts on wild flora and fauna. For many species, the impacts are detrimental and irreversible, whereas others are able to colonise and apparently thrive in these novel, human-made environments. Raptors are particularly susceptible to changes in the environment due to their position at the end of the food chain, yet...

Genetic confirmation of the species status of Jabouilleia naungmungensis

Species assessment of allopatric taxa is problematic. Here we consider the case of the Naung Mung Scimitar Babbler (Jabouilleia naungmungensis) from northern Myanmar. This bird was recognized as a new species in its original description, but was subsequently considered to be a subspecies of J. danjoui. We review the procedures used to make this assessment, and consider them in...

Seasonal changes of the Hazel Grouse Tetrastes bonasia habitat requirements in managed mountain forests (Western Carpathians)

We studied the differences between spring and winter sites of Hazel Grouse Tetrastes bonasia in a managed, temperate forest in the Beskid Mountains (Western Carpathians, Poland). The study of seasonal requirements of this species in this type of habitat was innovatory. Spring territories must provide birds with appropriate conditions for breeding and winter ones must give good...

The impact of invasive plant management on the foraging ecology of the Warbler Finch (Certhidea olivacea) and the Small Tree Finch (Camarhynchus parvulus) on Galápagos

In recent decades, arboreal Darwin’s Finches have suffered from a dramatic population decline, which has been attributed to parasitism by the invasive botfly Philornis downsi. However, changes to their primary habitat caused by invasive plant species may have additionally contributed to the observed population decline. The humid cloud forest on Santa Cruz Island is a stronghold...

Effects of body condition and food intake on stop-over decisions in Garden Warblers and European Robins during spring migration

During migration, birds need to optimize their time and/or energy management, especially during stop-overs. Previous studies with caged birds under controlled condition support the notion that departure decisions are condition-dependent, but they did not take into account the availability or the actual intake of food. In the study reported here we investigated whether food intake...

Conditions at autumn stopover sites affect survival of a migratory passerine

Weather is an important factor affecting many aspects of avian ecology, yet its importance for survival during various periods of the avian annual cycle has received relatively little attention and remains poorly understood. We have investigated the effect of weather conditions at the breeding and wintering grounds and during migration on the survival probability of Eurasian Reed...

Taxonomic status of the Liberian Greenbul Phyllastrephus leucolepis and the conservation importance of the Cavalla Forest, Liberia

The Liberian Greenbul Phyllastrephus leucolepis is known only from the Cavalla Forest, Liberia, where it was seen between 1981 and 1984 but has not been found since the collection of the type, and only, specimen. It is similar to the common and widespread Icterine Greenbul P. icterinus, from which it differs primarily in having white subterminal spots on the wing coverts and all...

Viability selection creates negative heterozygosity–fitness correlations in female Black Grouse Lyrurus tetrix

There is widespread interest in the relationship between individual genetic diversity and fitness–related traits (heterozygosity–fitness correlations; HFCs). Most studies have found weak continuous increases of fitness with increasing heterozygosity, while negative HFCs have rarely been reported. Negative HFCs are expected in cases of outbreeding depression, but outbreeding is...

Use of anthropogenic material affects bird nest arthropod community structure: influence of urbanisation, and consequences for ectoparasites and fledging success

Nests are a critically important factor in determining the breeding success of many species of birds. Nevertheless, we have surprisingly little understanding of how the local environment helps determine the materials used in nest construction, how this differs among related species using similar nest sites, or if materials used directly or indirectly influence the numbers of...

Cues to individual identity in songs of songbirds: testing general song characteristics in Chiffchaffs Phylloscopus collybita

Individual variation in vocalizations has been widely studied among different animal taxa, and it is commonly reported that vocalizations could be potentially used to monitor individuals in many species. Songbirds represent a challenging group of animals for the study of signalling of individual identity. They are highly vocal, but their songs are complex and can change over time...

Exploring host and geographical shifts in transmission of haemosporidians in a Palaearctic passerine wintering in India

This is the first molecular study of avian haemosporidia diversity in wintering populations of the Blyth’s Reed Warbler (Acrocephalus dumetorum) in India that explores the extent of host and geographical shifts in transmission areas. In 156 birds, six Haemoproteus lineages (37.8%; 95% CI 30.41–45.82%) and one Plasmodium lineage (1.9%; 95% CI 0.053–5.6%) were recovered. Of these...