Turkey and Black Vultures Were Found Up to 3,000 Metres in Chiapas but Were Most Common in the Lowlands
A 2026 study from Chiapas found turkey and black vultures across all three surveyed elevation bands up to…
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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.
Gila Monsters Were Larger Toward the North of Their Range
Measurements from 674 adult Gila monsters across the species' range showed larger body size toward the north. Size…
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Genome Assemblies for 39 Reptile Species Released, Including a Tropical House Gecko From Ethiopia
A 2026 data release placed genome assemblies for 39 reptile species in GenBank. The tropical house gecko sample…
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Great-tailed Grackles Hovered Over Floating Sargassum to Catch Swimming Crabs
During more than 13 hours of observation across 12 days on Cozumel, Mexico, great-tailed grackles made 57 flights…
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Human Food Resources Buffered Seasonal Diet Shifts in Coyotes South of Mexico City
A 2026 study of 198 coyote scats south of Mexico City found seasonal dietary diversity shifting at a…
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Desert cottontail density did not track four climatic factors in Chihuahua
Monthly pellet counts in Chihuahua found no relationship between desert cottontail density and precipitation, temperature, photoperiod or wind,…
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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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Urban Noise Was the Strongest Predictor of Rufous-Collared Sparrow Numbers; House Sparrow Abundance Also Mattered
A city-wide study in southern Mexico linked lower numbers of native rufous-collared sparrows primarily to noise, while house…
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Three Pelagic Fishes Made Up 93.8% of Fish Prey Taken by Heermann’s Gulls and Elegant Terns at Isla Rasa
Eight breeding seasons of diet sampling at Isla Rasa found that 93.8% of the fish prey taken by…
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Genomic Data Revealed Distinct Continental and Baja California Cactus Wren Groups
A 2026 bioRxiv preprint found strong genomic separation between continental and Baja California cactus wrens, argued that the…
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White-Winged Dove Had an Estimated Mean Density of 744 Birds per km² Along the Sinaloa River
A 2026 study along the Sinaloa River estimated a mean density of 744.03 white-winged doves per km². Density…
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Broad-billed Hummingbirds Had About 60% Higher Protein Intake per Unit Metabolic Body Mass
A controlled 13-day study in Mexico found higher protein and sugar intake per unit of metabolic body mass…
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278 Records Document Coyote Expansion Into Tropical Mesoamerica
A 2026 study compiled 278 coyote records from southeastern Mexico, Guatemala and Belize and found increasing occurrence over…
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Vehicle Collisions, Poisoning and Electrocution Stood Out in Rehabilitation Records for Threatened African Raptors
In a global review of 147,422 raptor admissions, vehicle collisions accounted for 25% of eight martial eagle admissions;…
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Fishing Nets Were the Most Abundant Visible Human-made Material in Six Osprey Nests in Mexico
At six osprey nests in Todos Los Santos Bay, researchers used drone images and deep learning to estimate…
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Parvovirus From Wild Coyote Pups in Mexico Was Closely Related to Dog CPV-2c Strains
Wild coyote pups with gastroenteritis in Nuevo León carried CPV-2c closely related to strains circulating in domestic dogs…
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