eggs Archives - British Ornithologists' Union

Strength in colours?

By Ashleigh Marshall|2025-02-02T00:42:49+00:006 Feb 2025|biliverdin, diet, diet composition, eggs, pigmentation, protoporphyrin, structural-function hypothesis, Uncategorized|

Partial support for a structural function for eggshell pigments in unspotted eggs of a calcium-limited bird

Historical Harvesting of Seabirds

By Thalissa Inch|2024-06-10T08:31:25+00:0010 Jun 2024|birds of conservation concern, eggs, monitoring, nesting, population decline, Seabirds|

Continued egg harvesting drives Sooty Tern declines

Does eggshell phenotype act as an identity signal?

By Ashleigh Marshall|2024-03-07T10:55:24+00:007 Mar 2024|brood parasitism, colonial birds, eggs, eggshell maculation, evolution, nest environment|

Sociality and nest environment linked to eggshell maculation in Hirundinidae

Avian eggs and calibrated digital photography

By Klaudia Szala|2023-08-15T10:46:11+00:0021 Aug 2023|camouflage, colouration, early-career researcher, ECR, eggs, experiment, sensory ecology|

How varied light affects colour and pattern measurements of eggshells?

Clutch size increases with latitude

By Jente Ottenburghs (he/him)|2023-06-28T14:39:11+00:0029 Jun 2023|Breeding, eggs, life history, nest predation, parental care|

But what about the size of the eggs?

Body condition and reproduction in declining diving ducks

By Dorota Gajdošová|2023-05-01T14:50:17+00:001 May 2023|avian biology, breeding biology, breeding success, colour ringing/banding, eggs, fieldwork, IBIS, incubation, nesting success, parasitism, physiology, population dynamics, population structure, waterbirds|

Increased body condition affects duck egg mass and hatchability

The mysterious basis of egg shape in birds

By D. Charles Deeming|2023-04-19T11:26:07+00:0027 Apr 2023|avian biology, breeding biology, egg shape, eggs, IBIS, morphology, physiology|

How do birds produce asymmetrical eggs?

Maternal competitive events influence offspring phenotype

By América Hernández|2022-08-31T17:00:23+00:005 Sep 2022|avian biology, Breeding, breeding biology, cavity nesting, competition, early-career researcher, ecology, ECR, eggs, experiment, IBIS, nest monitoring, nest-site limitation, passerines, phenotypic variation|

Compete with me and my progeny will grow faster

Avian embryos react to predators

By Jente Ottenburghs (he/him)|2022-07-11T14:47:25+00:0014 Jul 2022|antipredator behaviour, behaviour, Breeding, communication, eggs, experiment, incubation, nest predation, shorebirds, vocalisations|

Testing the effects of several predator-related cues on two shorebird species.

Do bird populations respond differently to climate change?

By Liam D. Bailey|2022-06-30T14:43:46+00:004 Jul 2022|adaptation, avian biology, behaviour, Breeding, breeding biology, climate, climate change, collaboration, ecology, eggs, forest birds, nesting, passerines, phenology, population dynamics, reproduction, temperature, woodland birds|

Birds in deciduous habitats are more sensitive to temperature change