217
Slovenija / Slovenia
Pochard Aythya ferina
Sivka – leta 2017 zaradi nižje vodne gladine na 
zadrževalniku Medvedce (UTM WM53 SV 
Slovenija) ni gnezdila, je pa jesenska jata 602 
osebkov največja doslej na tem območju
In 2017, the water level at the Medvedce water reservoir 
was much lower than usual due to prolonged drought. 
During the summer, water levels rose due to a number 
of heavy storms but were still lower than the long-term 
average. Compared to the 2002–2008 period (Bordjan & 
Božič 2009), it was approximately at 75% at the beginning 
of the summer and at 85% at the end. That year no 
fledged Pochards were observed at the site. In September, 
Pochards started to gather and reached a maximum of 
602 individuals on 20 Oct 2017. This is so far the highest 
number of counted Pochards at Medvedce and almost 
twice as high as the previous record (Bordjan & Božič 
2009, own data). Astonishingly, there were even more 
Pochards in 2016 on the much smaller Rače fishponds, 
when J. Novak (pers. comm) counted 822 individuals on 25 
Oct feeding at Veliki ribnik. With the exception of Lakes 
Ptuj and Ormož (L.Božič pers.comm.), such high numbers 
Iz ornitološke beležnice
From the ornithological notebook
Acrocephalus 38 (172/173): 217–231, 2017
were observed only on Lake Cerknica in 1995 (Bordjan 
2012). The peak of Pochards counted in 2016 and 2017 was 
recorded at the end of October, which is slightly later than 
the peak observed in Rački ribniki–Požeg Nature Park in 
1985–1995 (Vogrin 1998).
Dejan Bordjan, Oddelek za gozdarstvo in obnovljive gozdne vire, 
Biotehniška fakulteta, Univerza v Ljubljani, Večna pot 83, SI–1000 
Ljubljana, Slovenija, e–mail: dejan.bordjan@gmail.com
Ledni slapnik Gavia immer
Great Northern Diver – an adult observed 
between 24 Nov and as late as 17 Dec 2017 on the 
Ljubljanica River (UTM VM60, C Slovenia) in 
Ljubljana near Prule. The record was confirmed by 
the Slovenian Rarities Committee – KRED as the 
8th for Slovenia (category A).
Dne 24. 11. 2017 sem se kot vsako jutro, preživeto na 
Konservatoriju za glasbo in balet Ljubljana, zazrl skozi 
okno po toku reke Ljubljanice. Že čez nekaj trenutkov 
me je v oči zbodla ogromna svetla ptica, ki je lovila 
prav na predelu, kjer se Ljubljanica razide v dve strugi, 
kjer se njun breg imenuje Špica. Odhitel sem ven za 
stavbo, da bi si lahko pobliže ogledal ptico, za katero je 
bilo že skozi okno jasno, da je slapnik. Kmalu se mi je 
Slika 1 / Figure 1: Ledni slapnik / Great Northern Diver Gavia immer, Prule, Ljubljana, reka Ljubljanica, 24. in 25. 
11. 2017 (foto: M. Mlakar Medved, A. Kotnik)