Lesser Black-backed Gulls Made Up 73% of Paresis Cases in Lisbon
A ten-year review of gull admissions from Lisbon and Setúbal found that lesser black-backed gulls dominated paresis cases,…
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Research, conservation and new discoveries
A continuing selection of new studies, conservation projects and important developments connected to species in the archive.
Older Female Common Waxbills Became More Subordinate During Breeding Seasons
In a five-year semi-natural study in Portugal, male and female common waxbills began with similar dominance, but ageing…
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Eurasian Jays Removed More Acorns From Open Parts of Portuguese Cork Oak Woodland
Camera traps in Portuguese cork oak woodland found Eurasian jays almost exclusively removed acorns from more open sites,…
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Breeding Failure Was Linked to Earlier Migration in Southern Eurasian Curlews
GPS tracking of 80 British-breeding Eurasian curlews shows that breeding failure is linked to earlier post-breeding departure, especially…
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Portugal’s European Roller Breeding Population Grew 26% While Breeding Range Shrank 67%
More than two decades of monitoring found that Portugal’s European roller breeding population increased by about 26% since…
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More Urbanised Streams Had Fewer Insectivorous Bird Species Across Five European Cities
Across 102 urban streams in five cities in Portugal, France, Italy, Belgium and Norway, insectivorous bird richness was…
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Wild Boar Harvests and Road Collisions Peaked in Years Without Major Beech and Oak Seed Crops
Wild boar hunting bags showed broad two-year fluctuations across parts of Central Europe. In Baden-Württemberg, both the number…
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Forest Disturbance Increased Modelled Habitat Suitability for Four European Herbivores
Tracking data from 3,069 animals showed that forest disturbance generally increased modelled relative habitat suitability for moose, red…
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Inheritance and Early-life Environment Both Shaped Pied Flycatcher Nonbreeding Areas
Tracking across the breeding range and a Netherlands–Sweden egg-translocation experiment showed that both inheritance and natal environment influence…
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Iberian Red Deer Roared Less During the Rut Where Human-Associated Soundscape Energy Was Higher and Near Wind Turbines
Across 14 days on Lousã Mountain, 88,022 validated Iberian red deer roars were less frequent where human-associated soundscape…
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Female Pied Avocets Migrated Farther Than Males
The standardized migration-distance measure averaged 1,928 kilometres for GPS-tracked female pied avocets and 1,277 for males; females also…
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Habitat Disturbance Shifted Azores Woodpigeon Diets Toward Exotic Plants
DNA from 450 Azores woodpigeon faecal samples revealed 159 plant taxa. Diets included a broader range of plants…
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Portugal’s Eurasian Red Squirrels Showed Markedly Low Mitochondrial Diversity
The most comprehensive genetic sampling of Eurasian Red Squirrels in Portugal to date found markedly low mitochondrial diversity,…
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Landscape models point to urban commuting in jackdaws
Models of 232 Iberian winter roosts suggest that jackdaws combine urban night-time refuges with feeding opportunities in agricultural…
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Most Tracked Common Terns From One German Baltic Colony Used the Western Route; 18% Used the Eastern Route
Of 71 Common Terns tracked from the Riether Werder colony on Germany’s Baltic coast, 58 used a western…
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22 of 24 Annual-Cycle Measures Were Repeatable in GPS-Tracked Eurasian Curlews
A long-term GPS dataset of 94 adult Eurasian Curlews found statistically supported repeatability in 22 of 24 annual-cycle…
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European Roe Deer Used Reforested Eucalyptus Stands Less Than Afforestation Stands in the 2020 Dry Season
Camera traps in central Portugal showed the clearest management effect in the 2020 dry season: estimated roe deer…
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Most Iberian jackdaws share winter roosts with other species
A census of 232 roosts in Spain and Portugal found that 71.6 per cent were shared with other…
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Hybrid-type Collared Doves Dominated Puerto Rico and Were Common in the Canary Islands
Photo-based classification found hybrid-type Eurasian–African collared doves in about 90% of sampled birds in Puerto Rico and 43.8%…
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Traditional Livestock Grazing Was Linked to Lower Pathogen Exposure in Wild Boar and Higher Mammal Diversity
Across 18 Iberian study sites, wild mammal richness and diversity were greater and wild-boar antibody prevalence and multiple-pathogen…
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