Results 61 to 70 of about 1,237 (151)

Sibling competition in common tern Sterna hirundo chicks: underlying hormonal and behavioural patterns and mechanisms [PDF]

open access: yes, 2008
In avian young that are dependent on parental food provisioning, brood size and corresponding sibling competition are key environmental factors affecting present performance, future developmental trajectories, and ultimately fitness. I studied the effect
Schmidt, Luis
core   +1 more source

The use of hematophagous insects for blood collection in birds : the Common Tern (Sterna hirundo) as a case study [PDF]

open access: yes, 2016
El objetivo de este trabajo es actualizar la descripción de una técnica de obtención de muestras de sangre en aves y mostrar su eficiencia en una colonia de Gaviotín Golondrina (Sterna hirundo) situada en el lago Banter, Alemania. Las técnicas utilizadas
Paterlini, Carla A.   +2 more
core  

The biology and conservation of the Damara Tern in Namibia

open access: yes, 2011
The globally Near-threatened Damara Tern Sterna balaenarum is little known and faces several conservation issues. The aim of this study was to provide a description of the ecology and numbers of the species and discuss conservation management plans that ...
Braby, Justine
core  

Migration routes and non-breeding areas of Common Terns (Sterna hirundo) from the Azores [PDF]

open access: yes, 2015
We describe the migration routes and non-breeding areas of Common Terns (Sterna hirundo) from the Azores Archipelago, based on ringing (banding) recoveries and tracking of three birds using geolocators.
Cormons, Matt   +9 more
core   +1 more source

Abundance, population trends, and negative associations with lake water levels for six colonial waterbird species over five decades in southern Manitoba

open access: yesAvian Conservation and Ecology, 2021
Management of colonial waterbirds at regional, national, and continental scales requires up-to-date monitoring information on breeding locations, population sizes, and trends.
Ann E. McKellar   +2 more
doaj  

Patterns in tern trophic diversity in a region experiencing rapid climate change

open access: yesEcosphere
Foraging plasticity provides a mechanism for long‐lived species to adapt to rapidly changing environments. When shifts in food availability occur, individual variation in plasticity can lead to an increase in within‐species trophic diversity.
Natasha J. Gownaris   +2 more
doaj   +1 more source

Comparing timing and routes of migration based on ring encounters and randomization methods

open access: yesAnimal Biodiversity and Conservation
Estudio comparativo de la adecuación temporal y de las rutas migratorias mediante el empleo de hallazgos de anillas y métodos de randomización El trabajo presenta un método para comparar rutas migratorias.
H. Lokki, P. Saurola
doaj   +1 more source

Genetic variability in Larus argentatus and Sterna hirundo

open access: yes, 1979
Blood serum and egg-white protein samples from individuals representing seven colonies of Larusargentatus, and four colonies of Sterna hirundo were electrophoretically analysed to determine levels of genetic variability and to assess the utility of ...
Melvin, George Ian.
core  

Postbreeding dispersal and staging of Common and Arctic Terns throughout the western North Atlantic

open access: yesAvian Conservation and Ecology, 2017
In the western North Atlantic, Common (Sterna hirundo) and Arctic (S. paradisaea) Terns are sympatric at breeding colonies but show divergent migration strategies to coastal areas of South America and pelagic regions of the Antarctic, respectively ...
Pamela H. Loring   +4 more
doaj   +1 more source

Sterna nigra Linnaeus, 1758, spec. nov.

open access: yes
Sterna nigra [spec. nov.] S. cauda subforficata, corpore cano, capite rostroque nigro, pedibus rubris. Fn. svec. 128. Hirundo marina minor. Alb. av. 2. p. 82. t. 89. Sterna fusca. Raj. av. 131. Larus cinereus minor. Aldr. orn...
Linnaeus, Carolus
core   +1 more source

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