List of works - Steven J. Portugal

Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight

scientific article

Annual changes in body mass and resting metabolism in captive barnacle geese (Branta leucopsis): the importance of wing moult

scientific article published in April 2007

Bringing a Time-Depth Perspective to Collective Animal Behaviour

scientific article published on 19 April 2016

Variability in avian eggshell colour: a comparative study of museum eggshells

scientific article (publication date: 9 August 2010)

Matching times of leading and following suggest cooperation through direct reciprocity during V-formation flight in ibis

scientific article

Implantation reduces the negative effects of bio-logging devices on birds

scientific article published in November 2012

Moving in a moving medium: new perspectives on flight

scientific article published on September 2016

Respirometry: Anhydrous Drierite Equilibrates with Carbon Dioxide and Increases Washout Times

article

Associations between Resting, Activity, and Daily Metabolic Rate in Free-Living Endotherms: No Universal Rule in Birds and Mammals

scientific article published on 14 April 2016

Can museum egg specimens be used for proteomic analyses?

scientific article (publication date: 14 July 2010)

Does hyperthermia constrain flight duration in a short-distance migrant?

scientific article published on September 2016

First light for avian embryos: eggshell thickness and pigmentation mediate variation in development and UV exposure in wild bird eggs

scientific article published on 29 July 2014

Wild geese do not increase flight behaviour prior to migration

scientific article published on 16 November 2011

Testing the use/disuse hypothesis: pectoral and leg muscle changes in captive barnacle geese Branta leucopsis during wing moult

scientific article published in August 2009

Predicting the rate of oxygen consumption from heart rate in barnacle geese Branta leucopsis: effects of captivity and annual changes in body condition

scientific article published in September 2009

Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines

scientific article published in March 2016

Avian embryonic development does not change the stable isotope composition of the calcite eggshell

scientific article published in January 2011

Eggshell permeability: a standard technique for determining interspecific rates of water vapor conductance

scientific article published on 12 October 2010

Nesting behaviour influences species-specific gas exchange across avian eggshells.

scientific article published in September 2014

Boldness traits, not dominance, predict exploratory flight range and homing behaviour in homing pigeons

article

Balancing the competing requirements of air-breathing and display behaviour during male–male interactions in Siamese fighting fish Betta splendens

article

The use of body mass loss to estimate metabolic rate in birds

scientific article published on 07 December 2010

Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity.

scientific article published in August 2017

Miniaturization of biologgers is not alleviating the 5% rule

article

Validating a Noninvasive Technique for Monitoring Embryo Movement In Ovo.

scientific article published on 16 May 2016

Flight feather moult drives minimum daily heart rate in wild geese

article

Life in a bubble: the role of the labyrinth organ in determining territory, mating and aggressive behaviours in anabantoids.

scientific article

The coevolutionary biology of brood parasitism: a call for integration

article

It Takes Time to Be Cool: On the Relationship between Hyperthermia and Body Cooling in a Migrating Seaduck

scientific article published on 25 July 2017

Geographical bias in physiological data limits predictions of global change impacts

scientific article published on 20 April 2021

Youth lead the way in climate change response

article

Weak asymmetric interspecific aggression and divergent habitat preferences at an elevational contact zone between tropical songbirds

scientific article published on 26 October 2019

Surface texture heterogeneity in maculated bird eggshells

New routes prove detrimental for young hybrids

article

Eggshell composition and surface properties of avian brood-parasitic species compared with non-parasitic species

scientific article published in May 2023

Metabolic rate does not explain performance on a short-term memory task or personality traits in juvenile chickens ( <i>Gallus gallus domesticus</i> )

scholarly article (2023)

Self-organization of collective escape in pigeon flocks

scientific article published on 10 January 2022

Emergence of splits and collective turns in pigeon flocks under predation

scientific article published on 23 February 2022

The origin and maintenance of metabolic allometry in animals

article

Chilled-out iguanas have bird-like lungs

article

Lissaman, Shollenberger and formation flight in birds

scientific article

Seals scent their relatives

article

Scratching beyond the surface: examining macroecological patterns in avian eggshell texture

scientific article published in November 2025

Impacts of "supermoon" events on the physiology of a wild bird

scientific article published on 25 June 2019

Octopuses don't get theirs arms in a twist

article

The fast and forceful kicking strike of the secretary bird

scientific article

Bubbles create cosy environment for developing embryos

article

Protective shells make for more risky behaviour

scientific article published in 2015

Embryo movement is more frequent in avian brood parasites than birds with parental reproductive strategies

scientific article published in 2021

List of works by Steven J. Portugal

Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight

Annual changes in body mass and resting metabolism in captive barnacle geese (Branta leucopsis): the importance of wing moult

Bringing a Time-Depth Perspective to Collective Animal Behaviour

Variability in avian eggshell colour: a comparative study of museum eggshells

Matching times of leading and following suggest cooperation through direct reciprocity during V-formation flight in ibis

Implantation reduces the negative effects of bio-logging devices on birds

Moving in a moving medium: new perspectives on flight

Respirometry: Anhydrous Drierite Equilibrates with Carbon Dioxide and Increases Washout Times

Associations between Resting, Activity, and Daily Metabolic Rate in Free-Living Endotherms: No Universal Rule in Birds and Mammals

Can museum egg specimens be used for proteomic analyses?

Does hyperthermia constrain flight duration in a short-distance migrant?

First light for avian embryos: eggshell thickness and pigmentation mediate variation in development and UV exposure in wild bird eggs

Wild geese do not increase flight behaviour prior to migration

Testing the use/disuse hypothesis: pectoral and leg muscle changes in captive barnacle geese Branta leucopsis during wing moult

Predicting the rate of oxygen consumption from heart rate in barnacle geese Branta leucopsis: effects of captivity and annual changes in body condition

Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines

Avian embryonic development does not change the stable isotope composition of the calcite eggshell

Eggshell permeability: a standard technique for determining interspecific rates of water vapor conductance

Nesting behaviour influences species-specific gas exchange across avian eggshells.

Boldness traits, not dominance, predict exploratory flight range and homing behaviour in homing pigeons

Balancing the competing requirements of air-breathing and display behaviour during male–male interactions in Siamese fighting fish Betta splendens

The use of body mass loss to estimate metabolic rate in birds

Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity.

Miniaturization of biologgers is not alleviating the 5% rule

Validating a Noninvasive Technique for Monitoring Embryo Movement In Ovo.

Flight feather moult drives minimum daily heart rate in wild geese

Life in a bubble: the role of the labyrinth organ in determining territory, mating and aggressive behaviours in anabantoids.

The coevolutionary biology of brood parasitism: a call for integration

It Takes Time to Be Cool: On the Relationship between Hyperthermia and Body Cooling in a Migrating Seaduck

Geographical bias in physiological data limits predictions of global change impacts

Youth lead the way in climate change response

Weak asymmetric interspecific aggression and divergent habitat preferences at an elevational contact zone between tropical songbirds

Surface texture heterogeneity in maculated bird eggshells

New routes prove detrimental for young hybrids

Eggshell composition and surface properties of avian brood-parasitic species compared with non-parasitic species

Metabolic rate does not explain performance on a short-term memory task or personality traits in juvenile chickens ( <i>Gallus gallus domesticus</i> )

Self-organization of collective escape in pigeon flocks

Emergence of splits and collective turns in pigeon flocks under predation

The origin and maintenance of metabolic allometry in animals

Chilled-out iguanas have bird-like lungs

Lissaman, Shollenberger and formation flight in birds

Seals scent their relatives

Scratching beyond the surface: examining macroecological patterns in avian eggshell texture

Impacts of "supermoon" events on the physiology of a wild bird

Octopuses don't get theirs arms in a twist

The fast and forceful kicking strike of the secretary bird

Bubbles create cosy environment for developing embryos

Protective shells make for more risky behaviour

Embryo movement is more frequent in avian brood parasites than birds with parental reproductive strategies

How much calcium to shell out? Eggshell calcium carbonate content is greater in birds with thinner shells, larger clutches and longer lifespans