M. Bulla

Differences in sperm swimming speed and morphology between the three genetic morphs in the ruff sandpiper

The paper compares sperm swimming speed and morphology among three genetic morphs of ruff sandpipers and finds Faeder sperm are slowest, but Independent sperm do not show expected higher quality.

Urban birds' tolerance towards humans was largely unaffected by increased variation in human levels due to COVID-19 shutdowns

The study found urban birds' tolerance of humans remained largely unchanged despite reduced human presence in parks during COVID-19 shutdowns.

Nest relief in the cryptically-incubating semipalmated sandpiper is quick but vocal

This study examines nest relief behavior in semipalmated sandpipers, finding that vocalizations during quick nest reliefs may help coordinate parental duties despite the birds' reliance on crypsis for nest defense.

Still no evidence for disruption of global patterns of nest predation in shorebirds

This paper critiques a study claiming increased Arctic nest predation disrupts global patterns, finding no statistical support for such conclusions and highlighting methodological issues.

A global analysis of song frequency in passerines provides no support for the acoustic adaptation hypothesis but suggests a role for sexual selection

This study analyzes song frequency in 5,085 passerine species and finds no support for the acoustic adaptation hypothesis but links song frequency to body size and sexual selection.

No evidence for disruption of global patterns of nest predation in shorebirds

The paper challenges claims of climate change disrupting nest predation patterns in shorebirds, arguing that the original study's methodology is flawed and lacks statistical support.

Diverse incubation rhythms in a facultatively uniparental shorebird -- the Northern Lapwing

The paper describes diverse incubation rhythms and parental involvement in Northern Lapwing nests using continuous video monitoring.

Methods in field chronobiology

This paper reviews methods for studying rhythms in wild animals, highlights case studies, and identifies future challenges in field chronobiology.

Temporary mate removal during incubation leads to variable compensation in a biparental shorebird

This study examines how semipalmated sandpiper parents compensate for temporary mate removal during incubation, finding partial compensation with individual variation and no sex differences.

Flexible Parental Care: Uniparental Incubation In Biparentally Incubating Shorebirds

The paper shows that 8 out of 15 shorebird species can switch to uniparental incubation when one parent disappears, with 27% of these clutches successfully hatching.

Unexpected diversity in socially synchronized rhythms of shorebirds

This study examines incubation rhythms in shorebirds, finding significant diversity in synchronization patterns and linking them to predation risk rather than energy demands.