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 444624 times)

T40cfr403

  • Hero Member
  • *****
  • Posts: 14605
Re: New developments in the field of science
« Reply #2205 on: March 16, 2019, 11:53:55 AM »
Capturing wild animals for study can stress them to death. Is it worth it?

https://www.washingtonpost.com/science/2019/03/13/capturing-wild-animals-study-can-stress-them-death-is-it-worth-it/?utm_term=.d6caace03d54&wpisrc=nl_animalia&wpmm=1

Paper: To Tag or not to Tag: Animal Welfare, Conservation, and Stakeholder Considerations in Fish Tracking Studies That Use Electronic Tags

https://www.researchgate.net/publication/258839345_To_Tag_or_not_to_Tag_Animal_Welfare_Conservation_and_Stakeholder_Considerations_in_Fish_Tracking_Studies_That_Use_Electronic_Tags


Helicopters and trucks were used last year to relocate hundreds of mountain goats, carried in crates, from Olympic National Park in an effort to protect natural resources, reduce visitor safety issues and boost native goat populations elsewhere in Washington state. (Washington Department of Fish and Wildlife/AP)

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 #2206 on: March 16, 2019, 02:14:09 PM »
Pigeons With Tiny Backpacks Are Gathering Climate Data Now

https://gizmodo.com/pigeons-with-tiny-backpacks-are-gathering-climate-data-1833207515

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 #2207 on: March 16, 2019, 03:45:17 PM »
Listen to Tom Cade Recall Key Moments in the Effort to Save the Peregrine Falcon (don't miss this!)

https://www.audubon.org/news/listen-tom-cade-recall-key-moments-effort-save-peregrine-falcon


 Tom Cade with Percy, a Peregrine Falcon. Photo: The Peregrine Fund
« Last Edit: March 20, 2019, 06:24:14 PM by T40cfr403 »
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 #2208 on: March 16, 2019, 11:32:28 PM »
Five Hawks Down: watch the tragic migration of six Californian raptors

https://bigthink.com/five-hawks-down-watch-the-tragic-migration-of-six-californian-raptors

Tracking Talons (Twitter) Animation Video - https://twitter.com/i/status/1105077087600345088

Tracking Talons Facebook - https://www.facebook.com/TrackingTalons/

Tracking Talons Website - http://swainson.org/




This is a fledgling we banded in 2017. Her first winter in Argentina (blue) was a lot like her second winter (yellow).
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 #2209 on: March 17, 2019, 08:41:51 PM »
Population of tropicbirds on the decline in Seychelles, study shows

http://www.seychellesnewsagency.com/articles/10642/Population+of+tropicbirds+on+the+decline+in+Seychelles%2C+study+shows


Attacks on the nests and eggs being eaten by predators such as rats and crows were one attribution to the decline in breeding. (Glen Fergus, Wikimedia Commons) Photo License: (CC BY-SA 2.5)
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 #2210 on: March 19, 2019, 06:47:03 PM »
Bromethalin is poisoning the parrots of Telegraph Hill

https://news.uga.edu/bromethalin-poisoning-parrots-telegraph-hill/

Paper: Evidence of bromethalin toxicosis in feral San Francisco "Telegraph Hill" conures

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0213248


Median Oral Lethal Dose/Lethal concentration (LD50/LC50) of technical grade bromethalin in mammals and birds [4].

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 #2211 on: March 19, 2019, 08:51:05 PM »
Tiny song bird makes record migration, U of G study proves

https://www.eurekalert.org/pub_releases/2019-03/uog-tsb031919.php

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 #2212 on: March 19, 2019, 08:51:44 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 #2213 on: March 19, 2019, 08:56:49 PM »
Climate change negatively affects waterbirds in the American West

https://yubanet.com/california/climate-change-negatively-affects-waterbirds-in-the-american-west/

Paper: Climate-Altered Wetlands Challenge Waterbird Use and Migratory Connectivity in Arid Landscapes

https://www.nature.com/articles/s41598-019-41135-y


Major Great Basin wetlands (and their associated salinities) used by millions of waterbirds throughout the annual cycle. North America's three hypersaline lakes (i.e., Lake Abert, Mono Lake and Great Salt Lake) occur in the Great Basin. Inset map shows U.S. Fish and Wildlife Service North American migratory bird flyways: (A) Pacific, (B) Central, (C) Mississippi and (D) Atlantic. The map does not extend into Canada as flyways mix in the north.


Hydro-climatic relationships in dry systems. Associations of climate variability with wetland water type (fresh, saline and hypersaline) and the connection to specific migratory waterbird life-history stages. The relationship between wetland type and climate illustrates the contraction of variability in wetland type during wet (blue wedge) and dry (orange wedge) years. As shifts continue toward a warmer, drier climate, the diversity of wetland types will transform.
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 #2214 on: March 20, 2019, 06:02:52 PM »
Hen harriers 'vanishing due to illegal killing' - study

https://www.bbc.com/news/science-environment-47629829


The hen harrier is known as the 'skydancer' for its agility on the wing


Paper: Patterns of satellite tagged hen harrier disappearances suggest widespread illegal killing on British grouse moors

https://www.nature.com/articles/s41467-019-09044-w#Tab1


Hen harrier terminal week fixes in relation to grouse moors. Data include only satellite-tracked hen harriers that were known to have been illegally killed and those that suddenly disappeared when their tag stopped with no indication of a prior malfunction (n = 42) and the area (grid squares) encompassed 98% of the tracking data from these individuals and 91% of data from all tracked harriers. a Data in northern England and southern Scotland are displayed on a 20 ? 20 km2 grid. Points (circles and triangles) are displayed for all grid squares with more than five fixes. White circles show grid squares used by hen harriers with no fixes from terminal weeks. Grey circles represent grid squares with a below average (median) proportion of terminal week fixes and black triangles represent above average proportion. Grouse moor distribution is shown (red scale) and calculated as the percentage of 1-km grid squares per 20 km square with heather burning (grouse moor management, Douglas et al.59). b The graph shows the proportion of fixes (?SE) that fall into each grouse moor group (%) from live weeks (light bars) and terminal weeks (dark bars)
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 #2215 on: March 20, 2019, 06:16:17 PM »
Birds in data: Counting cuckoos and other stories

https://factordaily.com/birds-in-data-counting-cuckoos-and-other-stories/


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 #2216 on: March 20, 2019, 06:18:50 PM »
Quote from: T40cfr403 on March 19, 2019, 08:51:05 PM
Tiny song bird makes record migration, U of G study proves

https://www.eurekalert.org/pub_releases/2019-03/uog-tsb031919.php



More info: Tiny song bird makes record migration

https://www.sciencedaily.com/releases/2019/03/190319121817.htm


Blackpoll warbler wearing tiny 'backpack.'
Credit: Vermont Centres for EcoStudies
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 #2217 on: March 20, 2019, 07:38:12 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 #2218 on: March 21, 2019, 12:23:37 PM »
Researchers Find Broad Impacts from Lake Trout Invasion in Yellowstone

http://www.uwyo.edu/uw/news/2019/03/researchers-find-broad-impacts-from-lake-trout-invasion-in-yellowstone.html

Paper: Predatory fish invasion induces within and across ecosystem effects in Yellowstone National Park

http://advances.sciencemag.org/content/5/3/eaav1139

Quote: "Bald eagles shifted their diet to compensate for the loss of cutthroat trout. Even with that shift in diet, the average number of bald eagle nests on Yellowstone Lake dropped from 11 in 2004-08 to eight in 2013-17. And nesting success dropped from 56 percent in 1985-89 to zero in 2009, before rebounding to 70 percent during 2013-17 as the eagles found alternative food sources.

Bald eagles at Yellowstone Lake have been seen more frequently preying on common loons, trumpeter swan cygnets and young white pelicans, possibly contributing to declines in those bird numbers as well."


UW researcher Lusha Tronstad holds a large cutthroat trout captured in Clear Creek, a tributary stream of Yellowstone Lake, when she was a Ph.D. student in spring 2005. The numbers of spawning cutthroats in the lake's tributaries have increased in recent years as a result of efforts to reduce the numbers of lake trout, whose presence has affected a number of other species in the Yellowstone Lake ecosystem since they were illegally introduced in the 1980s. (Lusha Alzner Photo)


Topological placement of taxa in the Yellowstone Lake food web before (left) and after (right) invasion by nonnative lake trout.

The conceptualization (nonmathematical) emphases are the cutthroat trout (YCT) and other components known (black arrows) or hypothesized (orange arrows) to be affected by the introduction of lake trout (LKT). Thick arrows indicate that the consumption of that food item is high by predator or herbivore, and thin arrows indicate that the consumption is low, within the aquatic (below the blue line) and across terrestrial (above the blue line) ecosystems. Letters represent consumption of (A) phytoplankton, (B) zooplankton, (C) amphipods, (D to G) cutthroat trout, (H) longnose suckers, (I) elk calves, and (J) common loon, trumpeter swan, American white pelican, double-crested cormorant, and Caspian tern. Organisms are not drawn to scale, although the size of the fish, osprey, and otter depicts observed shifts in abundance between periods. California gulls were present before lake trout invasion but no longer nest on Yellowstone Lake.
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 #2219 on: March 21, 2019, 12:52:11 PM »
Protecting small, old-growth forests fails to preserve bird diversity: Study

https://news.mongabay.com/2019/03/protecting-small-old-growth-forests-fails-to-preserve-bird-diversity-study/

Abstract: Evaluating the long-term effectiveness of terrestrial protected areas: a 40-year look at forest bird diversity

https://link.springer.com/article/10.1007%2Fs10531-018-01693-5


The rose-breasted grosbeak (Pheucticus ludovicianus). Photo Credit: Matthew Sileo.
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