Results 21 to 30 of about 1,237 (151)

Egg Characteristics of Female Common Terns Are Repeatable, and Vary With Maternal Age and Laying Order. [PDF]

open access: yesEcol Evol
Avian eggs exhibit striking variability in size, shape, colour, and maculation, not only among but also within species. Technical and analytical advances in image analysis offer the opportunity to understand the factors underpinning this variability ...
Bichet C   +4 more
europepmc   +2 more sources

Nesting seabirds in SE Spain: distribution, numbers and trends in the province of Almería

open access: yesScientia Marina, 2003
Little is known on the abundance of seabirds breeding in southeastern Spain. This study reports on the distribution, numbers and population trends of breeding colonies of this avian group in this region.
Mariano Paracuellos, Juan Carlos Nevado
doaj   +1 more source

Complete Genome Sequence, Molecular Characterization and Phylogenetic Relationships of a Novel Tern Atadenovirus

open access: yesMicroorganisms, 2021
Discovery and study of viruses carried by migratory birds are tasks of high importance due to the host’s ability to spread infectious diseases over significant distances.
Alina Matsvay   +8 more
doaj   +1 more source

Evaluating the Effectiveness of a Conservation Project on Two Threatened Birds: Applying Expert-Based Threat Analysis and Threat Reduction Assessment in a Mediterranean Wetland

open access: yesDiversity, 2022
We applied two recent approaches largely used in biological conservation: Threat Analysis (TAN) and Threat Reduction Assessments (TRAs), assessing the effectiveness of a project focused on two water-related bird species (common tern, Sterna hirundo and ...
Pietro Giovacchini   +2 more
doaj   +1 more source

Seabird metapopulations: searching for alternative breeding habitats [PDF]

open access: yes, 2009
Today, many seabird species nest in port areas, which are also necessary for human economic activity. In this paper, we evaluate, using a metapopulation model, the possibilities for creating alternative breeding sites for the Common Tern (Sterna hirundo)
Robbert P. H. Snep   +11 more
core   +1 more source

Attendance of scavenging seabirds at trawler discards off Galicia, Spain

open access: yesScientia Marina, 2003
The occurrence of scavenger seabirds at fishing trawlers was studied off Galicia, Spain. A total of 9,368 seabirds of 23 species were recorded during 92 fishing operations in 1998 and 1999.
Julio Valeiras
doaj   +1 more source

The effect of localized disturbance on the acoustic behavior of the common tern (Sterna hirundo) [PDF]

open access: yesJASA Express Letters
In this study, passive acoustic monitoring was used to assess the impact of investigator disturbance on the acoustic behavior of a colony of common terns. A graded antipredator response in the colony was hypothesized, which would result in an increase in
J. E. Brosseau   +4 more
doaj   +1 more source

Geolocator study reveals east African migration route of Central European Common Terns

open access: yesAvian Research, 2020
Background The majority of European Common Terns (Sterna hirundo) migrate south along the western coast of Europe and Africa, while birds from eastern regions are known to cross the Mediterranean Sea from east to west or migrate along the eastern African
Jelena Kralj   +5 more
doaj   +1 more source

Laying eggs on the same nest: unusual mixed-species clutch among three colonial shorebirds

open access: yesAvocetta
Mixed clutches are relatively uncommon among colonial shorebirds and challenging to document. Here, we report the co-occurrence of three species’ eggs, belonging to Pied Avocet Recurvirostra avosetta, Little Tern Sternula albifrons and Common Tern ...
Paolo Salvador, Stefano Sponza
doaj   +1 more source

The comparative breeding ecology of sympatric common and arctic terns in N.E. England [PDF]

open access: yes, 1999
The life-history traits of two sympatric seabird species, the Common Sterna hirundo and Arctic Tern S. paradisaea, and the flexibility of these traits in relation to short and longer term changes in environmental conditions were measured at Coquet Island,
Robinson, J.A.   +1 more
core  

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