Inland Mute Swans Had Higher Winter Body Condition Despite Harsher Winters and Supplemental Feeding
A study of 853 mute swans from four Polish wintering regions found higher body condition inland than on…
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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.
pH-Adjusted Hill Equation Reliably Estimated Blood Oxygen Saturation From 70–100% in Immobilised White Rhinos
A South African study of 16 immobilised male white rhinos in Kruger National Park found that a pH-adjusted…
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Task Uncertainty Increased Interference From Irrelevant Visual Information in Rhesus Macaque Decisions
Two rhesus macaques made less accurate visual decisions under task uncertainty; recordings and microstimulation in primary visual cortex…
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Blood Samples from 576 Wild Harbour Seals Establish 35 Health Reference Ranges
Blood samples collected from 576 wild harbour seals over 28 years produced reference intervals for 35 health parameters…
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Larger Broods and Older Social Fathers Were Linked to Shorter Telomeres in Male Barn Swallow Nestlings
A long-term study near Milan found shorter telomeres in male barn swallow nestlings from larger broods or with…
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Common Moorhens See Nearly 300 Degrees Around Them Despite a Narrow Binocular Field
Common moorhens have a binocular field only about 34° wide at its maximum, but nearly 300° of combined…
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Simulated Pre-Saharan Magnetic Conditions Did Not Produce Sustained Extra Mass Gain in Thrush Nightingales
A 2026 replication found that juvenile thrush nightingales exposed to a magnetic simulation ending in northern Egypt did…
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Barietin From Puff Adder Venom Raised Heart Rate by About 30% in Rats
Purified barietin from puff adder venom increased heart rate by about 30% in rats while changing blood pressure…
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One Harbour Seal Had Similar Visual Acuity Underwater and in Air
A trained harbour seal detected small high- and intermediate-contrast targets about equally well underwater and in air, while…
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PFAS Exposure Was Linked to Oxidative Stress in Starling Chicks, but Not to Similar Changes in Great Tits
Eggs near an Italian fluoropolymer plant contained up to ten times more PFAS. Starling nestlings showed signs of…
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A Single High Lead Dose Altered Blood Cells in Great Tit Chicks
A single high experimental lead dose made red blood cells smaller and increased nuclear abnormalities in great tit…
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Hooded Crow Nestlings Had Low Levels of Cadmium, Lead and Arsenic in a Polish Wetland
Blood and feather samples from 29 hooded crow nestlings in Warta Mouth National Park showed low concentrations of…
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Longer Telomeres in Yearling Barn Swallows Predicted Longer Lives and More Fledglings
A lifetime study of 106 barn swallows found that birds with longer telomeres when they entered the breeding…
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Mercury Was Linked to Physiological Changes in Barnacle Goose Goslings but Not Adults
In wild Svalbard barnacle geese, goslings with more mercury in their red blood cells had lower 4-HNE, a…
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Great Tit Chicks in Urban and Agricultural Sites Showed the Highest Combined Physiological Stress
A study of 198 great tit nestlings from 44 nests in Veneto found the highest Integrated Biomarker Response…
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Mitochondrial Respiration Rose 58–87% After Homing Flights in Pigeons
In homing pigeons from Guidonia, Italy, three measures of red-blood-cell mitochondrial respiration rose by 58.2–87.3% after flight. Males…
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Muscle Minerals Varied Across the Antler Cycle in Wild Red Deer
In 32 wild red deer stags from central Spain, muscle mineral composition differed among four sampling periods across…
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Homing Pigeon Eyes Diverged During Flight but Converged Toward the Perch During Landing
Onboard cameras showed that homing pigeon eyes drifted slowly outward during forward flight in step with optic flow,…
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Industrial-Site House Sparrows in Kosovo Had Higher Metal Burdens Alongside Blood and Testicular Changes
An integrated analysis of 60 adult male house sparrows from Mitrovica, Drenas and rural Ujmir found higher lead,…
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Impala fGCM Levels Were 57% Higher on Dry-Season Weekends in Four-Species Tourism Study
At Somabula, impala fGCM levels were about 57% higher over dry-season weekends than weekdays, while the other three…
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