Testosterone coordinates gene expression across different tissues to produce carotenoid-based red ornamentation

S Khalil, ED Enbody, C Frankl-Vilches… - Molecular Biology …, 2023 - academic.oup.com
Carotenoid pigments underlie most of the red, orange, and yellow visual signals used in
mate choice in vertebrates. However, many of the underlying processes surrounding the …

Photoperiod and rainfall are associated with seasonal shifts in social structure in a songbird

JF Welklin, SM Lantz, S Khalil, NM Moody… - Behavioral …, 2023 - academic.oup.com
Seasonally breeding animals often exhibit different social structures during non-breeding
and breeding periods that coincide with seasonal environmental variation and resource …

Sperm numbers as a paternity guard in a wild bird

M Rowe, A Van Oort, L Brouwer, JT Lifjeld, MS Webster… - Cells, 2022 - mdpi.com
Sperm competition is thought to impose strong selection on males to produce competitive
ejaculates to outcompete rival males under competitive mating conditions. Our …

Females with attractive mates gain environmental benefits that increase lifetime and multigenerational fitness

DG Barron, H Schwabl, PA Carter… - The American …, 2025 - journals.uchicago.edu
Resolving the degree to which environmental (direct) versus genetic (indirect) benefits
shape female mate choice is a long-standing challenge, particularly for socially …

Young American Herring Gulls (Larus argentatus Subsp. Smithsonianus) Have the Opportunity for Social Development at the Breeding Colony

LU Taylor - Waterbirds, 2024 - BioOne
Most seabirds delay reproduction for multiple years. The standing hypothesis is that
seabirds delay reproduction while they develop foraging skills. Here, I clarify an old but …

Behavioural differences between ornamented and unornamented male Red-backed Fairywrens (Malurus melanocephalus) in the nonbreeding season

TC Hendrix, F Fernandez-Duque, S Toner… - Emu-Austral …, 2023 - Taylor & Francis
During the breeding season, male Red-backed Fairywrens (Malurus melanocephalus) can
exhibit ornamented (red-black) or unornamented (brown, resembling females and juveniles) …

Adolescent gulls have the opportunity for social development at breeding colonies

LU Taylor - bioRxiv, 2023 - biorxiv.org
Most seabirds delay reproduction for multiple years. The long-standing ecological
hypothesis is that seabirds delay reproduction until they pass a foraging efficiency threshold …

New records of hybridisation in Australian Fairy-wrens' Malurus' spp.

JF Welklin, AE Johnson, A Black, G Nye… - Australian Field …, 2022 - search.informit.org
Ornithologists have long been fascinated by avian hybrids and this interest has increased in
recent years with advances in our understanding of the potential evolutionary consequences …

[PDF][PDF] The role of the novel female ornament in the wide-bodied pipefish, Stigmatapora nigra

F van Eyndhoven - 2022 - ir.canterbury.ac.nz
Sexual selection can drive the evolution of exaggerated ornaments and armaments, which
serve no purpose to survival but are beneficial for mate choice or intrasexual competition …

A photographic guide for determining egg incubation stage in the superb Fairy-Wren'Malurus cyaneus'

E Resendiz, PC Ditzel, WP Kessler… - Australian Field …, 2024 - search.informit.org
When monitoring the nesting biology of wild birds, nests are often found after the eggs have
been laid and inCubation has commenced. Candling-the use of a bright light to illuminate …