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Juvenile white-tailed sea eagles stay longer in the parental territory than assumed


Credit: Marc Engler/Leibniz-IZW
The white-tailed sea eagle is known for reacting sensitively to human disturbances. Forestry and agricultural activities are therefore restricted in the immediate vicinity of the nests. However, these seasonal protection periods are too short in the German federal States of Brandenburg (until August 31) and Mecklenburg-Western Pomerania (until July 31), as a new scientific analysis by a team of scientists from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) suggests. Using detailed movement data of 24 juvenile white-tailed sea eagles with GPS transmitters, they were able to track when they fledge and when they leave the parental territory: on average, a good 10 and 23 weeks after hatching, respectively. When forestry work is allowed again, most of the young birds are still near the nest. In a publication in the journal ....

Marc Engler , Leibniz Institute For Zoo , Wildlife Research , International Journal Of Avian Science , Mecklenburg Western Pomerania , Leibniz Institute , Avian Science , Oliver Krone , Developmental Reproductive Biology , Ecology Environment , வனவிலங்கு ஆராய்ச்சி , சர்வதேச இதழ் ஆஃப் ஏவியன் அறிவியல் , மெக்லென்பர்க் மேற்கு பாமரேநியா , ஏவியன் அறிவியல் , ஆலிவர் க்ரோன் ,

Zebra finch is a climate change 'canary in coalmine'


Macquarie University/The Lighthouse
The fatal impact of heatwaves on the eggs of one of Australia’s most abundant birds species has raised the alarm for Macquarie University researchers.
In a remote area of north-western NSW, scientists have been studying the local population of zebra finches – one of the most widespread and abundant birds in Australia – for more than 16 years.
Danger zone: Zebra finches are abundant, and in an average year 80 per cent of chicks survive … but not during heatwave, the researchers found.
In the summer of 2017, they recorded a catastrophic event. A heatwave with temperatures over 40 degrees for several days baked all the embryos in their eggs causing complete reproductive failure for this remarkably resilient bird. ....

United States , Simon Griffith , Luke Mccowan , Macquarie University , Bureau Of Meteorology , Department Of Conservation , International Journal Of Avian Science , International Journal , Avian Science , Professor Simon Griffith , Fowlers Gap Arid Zone Research , Fowlers Gap Arid Zone Research Station , Fowlers Gap , North America , North America , Bureau Of Meteorology , Fowlers Gap , Climate Change , ஒன்றுபட்டது மாநிலங்களில் , சிமோன் கிரிஃபித் , லூக் ம்க்கோவெந் , மக்வரீ பல்கலைக்கழகம் , பணியகம் ஆஃப் வானிலை ஆய்வு , துறை ஆஃப் பாதுகாப்பு , சர்வதேச இதழ் ஆஃப் ஏவியன் அறிவியல் , சர்வதேச இதழ் ,