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LEO winter roosts in Serbia

 
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milanche



Joined: 22 Nov 2006
Posts: 16
Location: Serbia

PostPosted: Wed Sep 17, 2008 12:58 am    Post subject: LEO winter roosts in Serbia Reply with quote

Hello again,

I will write about my favorite topic, Long-eared Owl winter roosts. Last winter we have done so far the biggest census of LEOs in Serbia. The project was funded by the Knjaz Milos Company. Almost 200 volunteers and professionals took part in locating and counting owls, mostly in Serbian northern province of Vojvodina (part of Pannonian plain).

You can see some pictures at:

http://www.josifpancic.com/galerije/Otvori%20oci%20-%20zastitimo%20sove/Terenski_rad/index.html - field work

http://www.josifpancic.com/galerije/Otvori%20oci%20-%20zastitimo%20sove/Sove/index.html - owls

http://www.josifpancic.com/galerije/Otvori%20oci%20-%20zastitimo%20sove/Obrazovanje_i_predavanja/index.html - education


Here is a small abstract from the paper we are writing now.

Distribution and numbers of Long-eared Owl Asio otus communal roost in Vojvodina during the winter 2007-08

The Long-eared Owls Asio otus gathers during the winter months in typical communal roosts, often on traditional sites in or near the human settlements. In the period between November 20th 2007 and February 28th 2008 a survey of communal roosts was done in the Autonomous Province of Vojvodina (N Serbia). The survey was done in human settlements and on large state farms using the total census method. The territory of Vojvodina was divided into 3 regions; Bačka, Banat and Srem. Total of 370 roosts were visited and 19.363 Long-eared Owls were counted (7.973 owls in Bačka within 159 roosts, 7.365 owls in Banat within 132 roosts, and 4.025 owls in Srem within 79 flocks). Another 23 roosts (10 in Bačka, 7 in Banat, and 6 in Srem) were also found, but owls were not counted in them. Amongst all visited roosts, 355 of them were settled in human settlements (95.95 %), and 15 roosts were found on large state farms (4.04 %). In 9 settlements (7 in Bačka and 2 in Banat) 2 roosts were registered (2.6 % of all settlements). The numbers of owls varied from 3 up to 386 specimen. The mean number of owls in a roost in whole of Vojvodina was 52.33 (50.14 in Bačka, 55.79 in Banat, and 50.95 in Srem). The largest part of roosts (44.87 %) belong to the middle sized roost holding 31-80 specimen. This category of roost size was dominant in all 3 of the surveyed regions. The mean density of roosts per 100 kmē in Vojvodina was 1.72 (1.93 in Bačka, 1.34 in Banat, and 2.27 in Srem). The mean density of owl specimen pre 100 kmē in Vojvodina was 89.91 (96.99 in Bačka, 74.92 in Banat, and 115.46 in Srem). Differencies in roosts and specimen density within the 3 regions were analysed and discussed.
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milanche



Joined: 22 Nov 2006
Posts: 16
Location: Serbia

PostPosted: Wed Sep 17, 2008 1:02 am    Post subject: Reply with quote

We invite you to join us during this winter's census. Several owl people from Poland will come in February to help us catch and ring LEOs on roosts.

Also, we need help and suggestions to find the best way to do color ringing of LEOs. It is suspected that some of the LEOs come from north during the winter, but there is no data about is yet.
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owlboy
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Joined: 19 Mar 2006
Posts: 1343
Location: Albany, NY, USA

PostPosted: Wed Sep 17, 2008 1:22 am    Post subject: Reply with quote

Thanks for the photos and information. As usual, Cyberkat took some great photographs. Even a couple of SEO's mixed in. Please share the paper with us once it is completed.
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milanche



Joined: 22 Nov 2006
Posts: 16
Location: Serbia

PostPosted: Thu Dec 04, 2008 4:50 am    Post subject: Reply with quote

Long-eared Owls have set up a new record in numbers a few days ago in Serbia. The largest roost had 402 LEO's last winter, but on Sunday November 30th there were 531 owls! Pretty impressive?

There were also several roosts holding more than 200 birds. All our field colleges are quite happy to go out and do some surveys.
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