Results 81 to 90 of about 14,332 (232)

A new female-like morph of juvenile male Levant Sparrowhawk (Accipiter brevipes) – Sexual mimicry to avoid intra-specific predation? [PDF]

, 2015
In migrant Levant Sparrowhawk (Accipiter brevipes) at Eilat, Israel, we noted that juvenile males had two different morphs – the one described to date in literature; and a second, previously undescribed morph, with femalelike barring on the ...
Fornasari, Lorenzo, Yosef, Reuven
core   +3 more sources

Duck Tales: Spatio‐temporal dynamics of habitat use and prey relationships of a diving duck and its implication for conservation management

Conservation Science and Practice, EarlyView.
Shows the spatiotemporal predictability of wintering eiders based on monitoring data from 1993–2023 with intertidal and subtidal Marine Protected Areas (yellow and green, respectively), and a depiction of the current mismatch between eider hotspots and protection measures. Abstract Migratory animals often follow predictable spatiotemporal distributions
Kasper J. Meijer, Oscar Franken, Allert Imre Bijleveld, Mennobart van Eerden, Tjisse van der Heide, Laura L. Govers, Han Olff   +6 more
wiley   +1 more source

Summary of Coastal and Estuarine Monitoring Programs in New Hampshire (2004), Trowbridge, P [PDF]

, 2004
The New Hampshire Estuaries Project (NHEP) compiles data from many coastal and estuarine monitoring programs to assess the status and trends of environmental indicators in the Great Bay and Hampton/Seabrook Harbor.
PREP
core   +1 more source

Free‐living Black‐tailed Godwits maintain constant intake rates across varying grassland habitat conditions by adjusting their foraging behaviour

Ibis, EarlyView.
Free‐living birds need to acquire enough food to fulfil their energetic needs, which may require more effort in habitats with less favourable conditions. Therefore, to maintain their necessary energy intake, birds need to adjust their foraging behaviour in response to varying habitat conditions.
Renée Veenstra, Mohamed Henriques, Timo Keuning, Jeroen Onrust, Matty P. Berg, Theunis Piersma   +5 more
wiley   +1 more source

Extracting Long-Term Patterns of Population Changes from Sporadic Counts of Migrant Birds [PDF]

Declines of many North American birds are of conservation concern. Monitoring their population changes has largely depended on formally structured Breeding Bird Surveys, and Migration Monitoring Stations, although some use has been made of lists by ...
Christopher Field, Eva Cantoni, Ian McLaren, Joanna Flemming   +3 more
core  

Combining δ2H and δ34S stable isotopes identifies diverse moult strategies in a short‐distance migratory bird

Ibis, EarlyView.
Moult strategies in birds can vary considerably even within a single species, particularly in terms of where moulting takes place. Yet, the factors underlying this variation and its consistency across years and individuals remain poorly understood. One such strategy, moult migration, involves individuals moving to a specific moulting location amid ...
Elza Marija Zacmane, Ivo Dinsbergs, Steffen Hahn, Māris Jaunzemis, Valts Jaunzemis, Oskars Keišs, Ance Priedniece, Viesturs Vīgants, Martins Briedis   +8 more
wiley   +1 more source

Knowledge gaps in trace element contamination of shorebirds and allies along the East Asian–Australasian Flyway: A review

Avian Research
Trace elements (metals and metalloids) are naturally occurring substances that may be essential at trace levels but become toxic pollutants at higher concentrations, accumulating in biological systems and posing severe risks to wildlife.
Mohd Ros Effendi, Wan Ahmad Wan Juliana, Mohammad Saiful Mansor   +2 more
doaj   +1 more source

Shorebirds wintering in Southeast Asia demonstrate trans-Himalayan flights

Scientific Reports, 2020
Many birds wintering in the Indian subcontinent fly across the Himalayas during migration, including Bar-headed Geese (Anser indicus), Demoiselle Cranes (Anthropoides virgo) and Ruddy Shelducks (Tadorna ferruginea). However, little is known about whether
David Li, Geoffrey Davison, Simeon Lisovski, Phil F. Battley, Zhijun Ma, Shufen Yang, Choon Beng How, Doug Watkins, Philip Round, Alex Yee, Vupasana Srinivasan, Clarice Teo, Robert Teo, Adrian Loo, Chee Chiew Leong, Kenneth Er   +15 more
doaj   +1 more source

Mapping wader biodiversity along the East Asian—Australasian flyway

PLOS ONE, 2019
The study is conducted to facilitate conservation of migratory wader species along the East Asian-Australasian Flyway, particularly to 1) Identify hotspots of wader species richness along the flyway and effectively map how these might change between breeding, non-breeding and migratory phases; 2) Determine if the existing network of protected areas (PA)
Jia Li, Alice C. Hughes, David Dudgeon
openaire   +4 more sources

Climate Change, Its Effect on Migration Patterns of the Cackling Goose and White-Fronted Goose in the Willamette Valley, and Implications for Goose Management [PDF]

, 2010
This thesis considers the question of whether climate change is affecting the migration patterns of geese in the Pacific Flyway, specifically cackling geese (Branta hutchinsii minima) and Pacific white-fronted geese (Anser albifrons frontalis). Ancillary
Warren, Kelly
core   +1 more source