Inlay

Now online in Journal of #Ornithology Within- and between-brood variations in haemosporidian infections of nestlings reveal complex host–vector–parasite relationships Open access link.springer.com/article/10.1...

...and what her everyday life looks like! Photo: Jonas Brüggeshemke

Now online in Journal of #Ornithology Traditional bioacoustic analyses and machine-learning methods indicate weak vocal dimorphism in four Cerrado antbird species Open access link.springer.com/article/10.1...

Now online in Journal of #Ornithology Hatch timing and parental bare part coloration are associated with chick growth in a mutually ornamented seabird link.springer.com/article/10.1...

Now online in Journal of #Ornithology Synchronous range dynamics of Caatinga birds during the Late Quaternary Open access link.springer.com/article/10.1...

The Quaternary period, marked by alternating glacial and interglacial phases, has profoundly shaped global biogeographic patterns. Among the ecosystems affected by this climatic instability are the Ne...

In species with obligate bi-parental care, investment by both parents in a current reproductive bout is critical to offspring growth and survival. The degree to which an individual can invest in their offspring relies on their quality as a parent. Parental quality can be communicated between individuals in a mated pair via ornamental features, as they may honestly reflect aspects of direct or indirect investment in offspring. In this study, we investigated whether the yellow-orange fleshy integuments of Atlantic Puffins Fratercula arctica reflect parental quality, as approximated by offspring hatch date and growth metrics. No aspect of parental coloration predicted hatch date, but several metrics of maternal and paternal coloration predicted offspring mass growth, peak mass and normalized wing growth. We also explored whether hatch date influenced patterns of chick growth and found that timing (before or after the arrival of the main food source) significantly predicted mass and skeletal growth. Specifically, early hatching chicks achieved higher peak masses but exhibited reduced wing growth, potentially reflecting alternative strategies between investing primarily in weight gain or structural development. Together, these results highlight chick growth as a complex feature associated with both breeding phenology and parental phenotype.

Sexual dimorphism in birds is frequently expressed through plumage traits. Yet, the extent to which males and females also differ acoustically remains poorly understood in many Neotropical passerines....

Avian blood parasites are vector-transmitted protozoan parasites and common in wild birds. They cause acute and chronic infections at different life stages with potentially detrimental effects on host...

Now online in Journal of #Ornithology Hematological responses of understory birds to haemosporidian parasites across land use and seasonal gradients in a cloud forest ecosystem of Veracruz, Mexico link.springer.com/article/10.1...

She told us how she got into ornithology... Photo: Hannah Kalthoff

Now online in Journal of #Ornithology High-resolution telemetry reveals a globally important migration bottleneck for Lesser Spotted Eagles (Clanga pomarina) on the shores of Lake Tanganyika Open access link.springer.com/article/10.1...

Haemosporidian parasites can alter host immune and physiological condition, yet their hematological effects may depend on habitat disturbance and seasonality. We investigated how haemosporidian infect...

Migratory routes align with leading lines where favorable soaring conditions occur. Soaring raptors, including the Lesser Spotted Eagle (Clanga pomarina), avoid large water bodies and mountain ranges ...

We are happy to introduce you to another member of our society, Hannah Kalthoff! Photo: Jonas Brüggeshemke

Now online in Journal of #Ornithology No clear links between haemosporidian parasite infection, host condition, and pairing success in a multi-year study of a population of Blue-black Grassquits Open access link.springer.com/article/10.1...

German Ornithological Society

Pathogens can shape host ecology and evolution by influencing survival, reproduction, and the expression of sexually selected traits. Among avian pathogens, haemosporidian parasites (Plasmodium, Haemo...

German Ornithological Society