Lynx meets wolf in Poland, video


This video says about itself:

Rare encounter of wolf and lynx in nature

Watch the exceptional encounter between the highly threatened wolf and a family of lynx in Poland’s wild forests. See also here.

Both animals have bounced back from the brink of extinction in Europe thanks to strong protection under EU Nature laws, but they are still at risk. We are campaigning to ensure that Europe’s beauties of nature are effectively protected.

Learn more about WWF campaign here.

Polish coot winters in Dutch Zwolle


This 2011 video is from the Plaswijckpark in Rotterdam, the Netherlands. A young coot had got stuck in a fence. People managed to free it. After investigation whether it was wounded, the bird was freed and swam again.

Translated from Dutch Vroege Vogels radio today:

Polish coot in Zwolle

Now, every winter already for seven years there is a coot with a numbered collar in a park in Zwolle. The animal turns out to have been ringed in eastern Poland!

Sad

The coot was discovered by Claudia van der Leur, making a walk every day around the park. “I thought at first it was a bit sad, a coot with such a large collar. But now that I look back at it for so many years, one may assume that it does not suffer from this band. ”

Van der Leur came into contact with fellow birdwatcher Louis Zandbergen. Who scanned the Internet for the origin of the animal. It turned out to be a coot ringed in eastern Poland in 2010. Except in Poland and Zwolle, the animal has also been seen on several occasions in Germany.

Not ab usual migratory bird

Gerrit Gerritsen of BirdLife in the Netherlands Bird explains that although coots are not standard migrating birds “they still can travel considerable distances. In winter there are huge groups in our country. and part of them comes from Eastern Europe, as demonstrated by this lovely sighting by Claudia and Louis.”

Site fidelity

That the animal has such fidelity to this site is not so surprising to Gerritsen. “A bird of course has an advantage if it is on familiar ground in both winter and summer. Then it learns best where the good food is and where dangers threaten.”

This coot has a white collar with the letters C18 on it.

Dutch house martins in artificial nests


This video is about a house martin nest on a balcony of an apartment building in Poland.

Translated from BirdLife in the Netherlands today:

Between the 1960s and 1980s, the house martin populations in our country decreased by about 70%. From 1990 on there was a slight increase. Despite this attention to their protection needs: for alleged nuisance their nests are too often removed or they are prevented from nesting in many ways. To help house martins with additional nesting opportunities therefore in the Netherlands since 2008 139 house martin ‘dovecotes’ have been made available.

Each year, these cotes are monitored. In 2015 house martins nested in 21 cotes. Thus, the occupation increases slowly, from 2.7% in 2010, 4.5% in 2011, 8.5% in 2012, 9.8% in 2013 and 12.3% in 2014 to 15.1% in 2015. Because once occupied cotes usually during following years remain inhabited and every year a few cotes will get new inhabitants it is expected that the occupancy will continue to increase in coming years.

Good bird news from Poland


This July 2019 video is about white-winged black terns in Biebzra in Poland.

From eco-restore.net:

Poland’s got new islands (2). Birds already know!

03/09/2015

Latest update from the Polish project we recently wrote about:

Good news for terns and gulls in Southern Poland. Several new islands are inviting them to breed! A short update and photos from Tomasz Wilk, the OTOP/BirdLife Poland coordinator behind this project in Partnership with Górażdże Group.

Most European rivers have lost their natural features such as islands, sand and shingle banks as well as their dynamic river bed. In consequence bird species breeding in such habitat, eg. Common Tern or Little Tern, need special conservation measures to prevent them to slip into the international Red List. Protecting natural river islands but also providing substitute habitats for those species proves highly successful.

This is the idea behind the partnership project “Strengthening the role of waterbodies in Górażdże Group mining sites for conservation of island-breeding birds”. Two brand new islands have been floated in Nowogród Bobrzański mining site, to provide nesting place for Common Terns. The spot has been chosen carefully – large reservoirs located close to river Bóbr (acting as a migration corridor for birds) and observations of single pairs of Common Terns breeding in the neighbourhood in previous years, suggest that this is a promising place.

The islands are a novelty for Poland – they are made of concrete reinforced with special, high-strength fibre. This ensures their long term resistance to water, frost and sun, and at the same time provides stability and protection – so much important for birds! This type of islands, invented and patented in Czech Republic, has been used for the first time in Poland! First Common Terns have been observed on the islands just the next day after their floating. We will soon find out wether the birds will make use of them for nesting. Meanwhile, in the Czech Republic, the Czech Society for Ornithology is providing 24 new islands of the same type on 6 sand and gravel pits in partnership with the extractive industries.

Marsh tits in Poland, new research


This video shows first a nuthatch, then a great tit, then a marsh tit at a bird feeder.

From the Journal of Avian Biology:

Immense plasticity of timing of breeding in a sedentary forest passerine, Poecile palustris

Abstract

Numerous bird species have advanced their breeding seasons in response to climate warming. These changes were mostly brought about by phenotypic plasticity, i.e. flexible reactions of individual birds, rather than by microevolutionary change. Knowing the limits of plasticity is thus of paramount importance in any attempt to predict possible reactions of birds to climate warming. However, the breeding performance of the same individuals in contrasting environmental conditions, necessary to answer this question, is rarely observed.

Here, we provide data on the flexibility in timing of egg-laying of individual Marsh Tit Poecile palustris females breeding in an extremely late (2013) and early (2014) spring in Białowieża National Park (Poland). In both years the birds stayed in the same places in the primeval old-growth forest, free of direct human influences (no nest-boxes, no additional food). The weather variation was within the range of conditions observed during 40 years in the study area, and no climate warming occurred in the Marsh Tit’s pre-breeding period.

Females (n = 16) shifted the onset of laying by 13-23 (median = 20) days between the seasons. This range of individual flexibility encompasses almost the whole latitudinal range of the breeding dates found across Europe. Such a buffer of plasticity would probably be sufficient for Marsh Tits to adjust the onset of egg-laying to the forecasted range of climate change. A combination of temperature and photoperiod appears to be involved in fine tuning of the birds’ breeding times with spring conditions, but how the birds asses[s] and integrate this information remains poorly understood.