We investigated which species of waterbirds at Bolivar, a wastewater treatment plant in Metropolitan Adelaide, South Australia, are likely to have been immigrants from the ephemeral wetlands arid zone. To do this, we compared abundance waterbird observed Bolivar during dry period eastern zone late 2018 and 2019 with that subsequent wet 2020–2022. Pink-eared Duck Malacorhynchus membranaceus, Gre...

In cooperatively breeding species, helpers can alleviate reproductive constraints by assuming the role of primary carers to first-born young, liberating breeders to invest in subsequent broods. However, evidence on how first-born young are transferred to helpers is currently lacking. We propose that breeder-offspring aggression might facilitate inter-brood division and test this idea using data...

Descriptive analysis suggests that a conspicuous white wing patch in dichromatic (black and white) pied and collared flycatchers is under sexual selection. Here, we use an experimental approach to test whether this trait is indeed the target of selection. We caught 100 collared flycatcher Ficedula albicollis males soon after their arrival on the breeding site. We reduced (blackened) part of the...

This is the first in a planned series of articles about breeding behaviour Brazilian birds. Field work has been carried out various regions Brazil since 1980s. The descriptions cover aspects reproductive biology, such as seasonality, nest architecture, materials and measurements, clutch size, egg colour, size shape, incubation period, nestling parental care. Many data are presented scientifical...

Research has documented the harms associated with performance and image enhancing drug (PIED) use lack of disclosure to healthcare providers (HCPs). Given that relationship between HCPs PIED consumers plays an important role in harm reduction, research is required understand barriers facilitators for engage help-seeking. This qualitative study explored attitudes around current reduction framewo...

Factor analysis was applied to individual type traits (TT) scored in primiparous cows belonging to two dual purpose Italian breeds, Rendena (REN; 20 individual type traits evaluated on 11 399 first parity cows), and Aosta Red Pied (ARP; 22 individual type traits evaluated on 36 168 primiparous cows). Six common latent factors (F1 to F6; eigenvalues ⩾1) which explained 63% (REN) and 58% (ARP) of...

We consider the distribution of the intermediate filaments (IFs) in the retinal cells of the Pied flycatcher (Ficedula hypoleuca, Passeriformes, Aves) in the foveolar zone, which has the most specialized morphology, where the passerines have neither the rods nor the second-order neurons that service these rods, with only the single and double cones acting as photoreceptors. We report that singl...