Breeding population of the Montaguʼs Harrier (Circus pygargus) in Opava region in 2020

Abstract

Within the study area of ca. 320 km2 in Opava region, 45 pairs (14.1 pairs / 100 km2) of the Montaguʼs Harrier (Circus pygargus) were found in 2020. Breeding of 29 pairs were confirmed by a nest finding, in which 89 nestlings were recorded. All nests were located in agricultural land, usually in field of the Winter Wheat (Triticum sp.). Almost a half of the pairs nested in 10 semi-colonies. The most remarkable semi-colony was situated in the Brumovice cadastral area, where 11 pairs of the species nested in the area of 47.3 ha.

Full text

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Acrocephalus (Ostrava) 35 (2020): 23–28
Hnízdní populace motáka lužního (Circus pygargus)
na Opavsku v roce 2020
Breeding population of the Montaguʼs Harrier (Circus pygargus)
in Opava region in 2020
Patrik MOLITOR1, Martin MIŠKOVSKÝ2, Roman PECHNÍK3 & Dušan BOUCNÝ4
1 Osvobození 119, 747 24 Chuchelná; e-mail: patrik.molitor@seznam.cz
2 Výhony 69, 747 62 Mokré Lazce; e-mail: MMiskovsky@seznam.cz
3 Záhumenní 310, 747 62 Mokré Lazce; e-mail: roman.pechnik@seznam.cz
4 Plk. Rajmunda Prchaly 115, 708 00 Ostrava; e-mail: dusanboucny@volny.cz
ÚVOD
Circus pygargus
 et  2016, 
Triticum-
          
-
   
 et -
Microtus arvalis
-
-
-
Praktická ochrana hnízd silně ohroženého motáka lužního ( )
na Opavsku
-

METODIKA
2
    
 et 

 2006, 


-
-
-



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VÝSLEDKY
2
2-

   

-

-
    
Secale ce-
realeClaviceps purpurea




Circus pygargus
Table 1: Number of the Montaguʼs Harrierʼs () pairs in cadastral areas within Opava region in 2020
Počet párů v hnízdní kategorii
Number of pairs in breeding category
Katastrální území
Cadastral area
Kvadrát
Grid square
prokázané
conrmed
předpokládané
probable
Celkem
Total
  4 - 4
   411
  2 - 2
  1 1 2
  2 - 2
  1 - 1
  1 1 2
  3 4 7
  1 2 3
  1 - 1
  1 2 3
  2 - 2
  1 - 1
  - 1 1
  1 1 2
  1 - 1
Celkem
Total 5 29 16 45
Circus pygargus
Table 2: Number of the Montaguʼs Harrierʼs () nestlings in nests within Opava region in 2020
Počet mláďat
Number of nestlings 12345x = 3,1
Počet případů
Number of cases 2 6 11 2n = 29

- 25 -
         
      Vulpes vulpes  
-

DISKUSE

-
   2  -

-
-

-
              
     

-
   
-
mu  et -


-

 et  2015, 2016, -


-
-


-
    
-
-
 et  2015, 2016, 
          -
Circus pygargus
Table 3: Number of the Montaguʼs Harrierʼs () pairs in semi-colonies within Opava region in 2020
Počet párů
Number of pairs 23411 n = 20
Počet případů
Number of cases 4411n = 10

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

PODĚKOVÁNÍ
-
      -
-

SOUHRN
2Circus py-
gargus2

Triticum

SUMMARY
2km2
Circus pygargus-
-
Triticum


ZDROJE
 Fauna ČR: sv. 29/1: Ptáci – : díl II/1.

Metody monitoringu druhů přílohy I směrnice
ES o ptácích: moták lužní ()

, , M, R, D-
Circus pygargus  Acrocephalus (Ostrava

       Moták lužní.    

           
Circus pygargusAcrocephalus (Ostrava)
, V ,       Circus pygar-
gus   Acrocephalus (Ostrava)

, V ,     Circus pygargus  
Acrocephalus (Ostrava


Circus pygargus

Photo 2: A pen raised around a Montaguʼs Harrierʼs () nest in the Sudice cadastral area.
Photo by P. Molitor (July 20, 2020).
Circus pygargus

Photo 1: A male Montaguʼs Harrier () ringed in the Kobeřice ve Slezsku cadastral area.
Photo by P. Molitor (July 10, 2020).


Circus pygargus
Map 1: Breeding distribution of the Montaguʼs Harrier () within Opava region in 2020 (map source: Geoportál ČÚZK)