Raptor Resource Project Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Author Topic: New developments in the field of science  (Read 444497 times)

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2280 on: April 19, 2019, 06:52:31 PM »
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2281 on: April 19, 2019, 07:17:10 PM »
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2282 on: April 20, 2019, 05:49:42 PM »
xeno-canto: Sharing bird sounds from around the world (fun site!)

Bald Eagle - Haliaeetus leucocephalus

https://www.xeno-canto.org/species/Haliaeetus-leucocephalus?pg=1
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2283 on: April 20, 2019, 05:52:07 PM »
A USD1.5 million project to determine where cats live in Washington DC

https://borneobulletin.com.bn/a-usd1-5-million-project-to-determine-where-cats-live-in-washington-dc/


A camera, which will help count feral cats in the city, is seen attached to a tree near the National Arboretum in Washington, DC
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2284 on: April 25, 2019, 01:36:37 PM »
Vulture Species Coexist; Don't Compete for Resources

https://www.newswise.com/articles/vulture-species-coexist-don-t-compete-for-resources

Paper: Using multiple data sources to investigate foraging niche partitioning in sympatric obligate avian scavengers

https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/ecs2.2548


Credit: James C. Beasley/UGA
Both turkey and black vultures discover and partake in this feast.
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2285 on: April 25, 2019, 01:37:15 PM »
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2286 on: April 25, 2019, 09:33:05 PM »
Scientists warn peregrine falcons could be the 'canary in the coal mine' for mercury contamination

http://www.brinkwire.com/science/scientists-warn-peregrine-falcons-could-be-the-canary-in-the-coal-mine-for-mercury-contamination/

Study Finds Mercury in Predator Peregrine Falcons

https://www.theepochtimes.com/study-finds-mercury-in-predator-peregrine-falcons_2888987.html

Peregrine falcons from both coasts found contaminated with mercury

https://www.earth.com/news/peregrine-falcons-mercury/

Biologist study finds mercury in predator peregrine falcons

https://abcnews.go.com/Technology/wireStory/biologist-study-finds-mercury-predator-peregrine-falcons-62537911

Paper: A Broadscale Assessment of Mercury Contamination in Peregrine Falcons Across the Northern Latitudes of North America

https://bioone.org/journals/journal-of-raptor-research/volume-53/issue-1/JRR-18-0003/A-Broadscale-Assessment-of-Mercury-Contamination-in-Peregrine-Falcons-Across/10.3356/JRR-18-0003.full




These prior studies, as well as satellite tracking results (Fuller et al. 1998, McGrady et al. 2002), all indicate that the majority of peregrines encountered at our two study sites originate from Arctic and boreal natal and breeding areas, so we sought to use feathers collected from migrating peregrines in autumn at SPI and AI to inform us remotely of contemporary Hg exposure at northern latitudes during the breeding season (i.e., the time and place where feathers were grown). We initially drew from archived axillary feathers collected in 2009 from the two study sites, and then also sampled fourth primary flight feathers (p4) from 2013?2015 in an effort to refine our knowledge of spatial and temporal Hg concentrations. Additional objectives were to assess differences in Hg exposure by age class and sex, compare Hg concentrations between feather types, and look for changes in Hg levels over time.


In an analysis of the overall variation in mean THg concentrations by feather type and age class, a mixed effects ANOVA model of females sampled at SPI in 2013 indicated significant differences by age class (F1,3 = 1197.1, P= <0.001), feather type (F= 65.7, P= <0.001), and the interaction between age class and feather type (F1,3 = 28.0, P = <0.001; Fig. 2). Our model indicated THg concentrations in p4 feathers were significantly greater than those in axillaries in each age class except HY (Fig. 2). All other age classes contained greater concentrations of THg in p4 feathers than HY females in our model, with SY individuals exceeding all others except AHY individuals (those that were not distinguished between SY and ASY age classes; Fig. 2).
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2287 on: April 26, 2019, 01:06:04 PM »
Songbird-body changes that allow migration may have human health implications

https://www.sciencedaily.com/releases/2019/04/190425115735.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29


White-throated sparrows are among the best-studied North American songbirds. With a typical wingspan of 6 to 7 inches, it breeds primarily in northern boreal coniferous and mixed forests and, a short-distance migrant, winters mainly in the southeastern US. To make these migrations, the bird's body changes significantly.
Credit: Paul Bartell / Penn State
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2288 on: April 26, 2019, 01:07:24 PM »
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2289 on: April 26, 2019, 01:09:20 PM »
'Catastrophic' breeding failure at one of world's largest emperor penguin colonies

https://www.sciencedaily.com/releases/2019/04/190424202543.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29


Emperor penguins on the sea ice in the Weddell Sea, Antarctica (stock image).
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2290 on: April 26, 2019, 02:03:07 PM »
Golden Eagles had a special place in the lives of Neanderthals

http://chronicle.gi/2019/04/golden-eagles-special-place-lives-neanderthals/

Abstract: Neanderthals and the cult of the Sun Bird

https://www.sciencedirect.com/science/article/abs/pii/S0277379119302069


Neanderthals appear to have given symbolic value to eagle claws
Minden Pictures/Alamy
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2291 on: April 28, 2019, 03:13:25 PM »
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2292 on: April 28, 2019, 04:18:36 PM »
B.C. spotted owl breeders hoping for new chicks as fertile eggs ready to hatch

https://toronto.citynews.ca/2019/04/28/b-c-spotted-owl-breeders-hoping-for-new-chicks-as-fertile-eggs-ready-to-hatch/


A young Northern Spotted Owl chick is seen in this undated handout photo. It takes fake eggs, sterile incubators, some trickery and years of trial and error to breed Canada's almost extinct northern spotted owl in captivity. Researchers at British Columbia's Northern Spotted Owl Breeding Program centre in Langley say their fingers are crossed this spring as they delicately tend to at least one fertile egg, due to hatch within days. THE CANADIAN PRESS/HO, Northern Spotted Owl Breeding Program
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2293 on: April 28, 2019, 04:19:36 PM »
Red-neck phalarope: A migratory divide towards the Pacific Ocean and Arabian Sea

https://www.sciencedaily.com/releases/2019/04/190426100334.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29


The results show the existence of a migratory divide with two defined populations of red-neck phalarope in the geography of the Western Palearctic.
Credit: Yann Kolbeinsson
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2294 on: April 29, 2019, 05:41:56 PM »
Leg length and temperature determine the use of unipedal roosting in birds

https://onlinelibrary.wiley.com/doi/abs/10.1111/jav.02008?af=R
Report to moderator   Logged
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring