Marta Szulkin

Gut microbiome variation in juvenile blue tits in a European urban mosaic.

The paper examines gut microbiome variation in juvenile blue tits across urban, suburban, and natural habitats in Warsaw, finding reduced diversity in urban areas and year-dependent effects.

Bird colours in urban mosaics: a study of two passerines

The paper examines urbanization effects on color traits in two passerine birds, finding reduced carotenoid chroma and increased phenotypic variation in great tits, and altered brightness in blue tits.

Avian promiscuity in the last European primeval forest

The paper examines extra-pair paternity in blue and great tits in a primeval forest, finding high promiscuity rates that do not impact reproductive success.

Comparing approaches to quantify urbanization on a multicontinental scale

This study compares transect- and point-based sampling designs for quantifying urbanization across 136 cities, finding that sampling design significantly affects environmental variable capture.

Continent-wide drivers of spatial synchrony in age structure across wild great tit populations

The paper quantifies spatial synchrony in great tit age structure across 32 populations and identifies drivers like clutch size, temperature, and beech crops, showing synchrony maintained up to 650km.

Testing for parallel genomic and epigenomic footprints of adaptation to urban life in a passerine bird

The paper examines genomic and epigenomic responses to urban life in Great tits, finding polygenic and non-parallel adaptation mechanisms.