Five years eagle studies results from Remda peninsula Pskovsky oblast Russia Gunnar Sein – NGO Eagle Club, ESTONIA Vasiliy Pchelintsev - JSC «ECOPROJECT», RUSSIA Urmas Sellis - NGO Eagle Club, ESTONIA Marina Sidenko – Remdovsky zakaznik, Russia Ülo Väli - NGO Eagle Club, ESTONIA
The Estonian eagles
Elabuga 2013
Study area – 1000 km2
Main goals of the studies • How many different species breeding in Remda peninsula? • What are the population numbers of breeding species? • Distribution of different species territories. • Species productivity.
Remdovskiy Zakaznik (74 700 hectare)
Known nests before 2014
• White-tailed Eagl – 5 nest sites • Osprey – 8 nest sites
Expeditions
• 5 years winter tracks – 1800 km • Through the years 22 participants (15 Estonians, 7 Russians) • One expedition last 3-5 days. Per year were 3-5 expeditions. All together were 20 expeditions
Other activities
Golden Eagle nest sites distribution • We found 5 new nest sites within 3 territories
White-tailed eagle nest sites distribution
• We found 32 new nest sites • Wt Eagles nest sites doesn’t situating regularly - G=0.50 (with regular distribution G>0.65)
Ospreys nest sites distribution • We found 57 new nest sites • Osprey nest sites doesn’t situating regularly - G=0.30 (with regular distribution G>0.65)
All nest sites together
• Altogether we fou 94 new nest sites • Remda „eagle community „ nest sites doesn’t situating regularly G=0.40
Population numbers • Golden Eagle : 3-4 pairs • White-tailed Eagle: 35-40 pairs • Osprey: 50-60 pairs
Density of territories (N:50 Osprey and 30 Wt Eagle) Study area 1000 km2 Average number of pairs per 100 km2: a) Wt Eagle – 3,0 b) Osprey – 5,0
5x5 km grid (49 squares) Average number of pairs per 100km2: a) Wt Eagle – 2,4 (average per square 0,6) b) Osprey – 4,0 (average per square 1,0)
Distribution of territories inside 5x5 km grid (49 squares)
Distribution of WT Eagle and Osprey territories difference significantly – (Fisher's Exact test) P = 0.0003
Distances of nearest neighbours (Osprey and Wt Eagle)
• No significant • Ospreys prefer to keep difference from Wt close to each other Eagle nests • t = -3.7274, df = 30.743, • t = 1.4702, df = 69.021, p<0.001 p = 0.1461
Does neighbours and Big Lake matter? Analyse method: Generalized Linear Mixed Model (year and breeding territory as random factors); n/s - not significant
OSPREY
Breeding Breeding Number of start success nestlings
Wt Eagle
Breeding start
Breeding success
Number of nestlings
Nearest Osprey
P=0.022
n/s
n/s
Nearest Osprey
n/s
n/s
n/s
Nearest Wt Eagle n/s
n/s
n/s
Nearest Wt Eagle
n/s
n/s
n/s
Distance to the Big Lake
n/s
n/s
Distance to the Big Lake
n/s
n/s
n/s
n/s
Forest cuttings outside zakaznik
Forest cuttings outside zakaznik
What I didn’t spoke today? About: •Natural factors as bear and fallen nests •Productivity •Diet •Border zone •Osprey transmitter •….
Finally - what could we say… and….
There are bloody hell amount of eagles!!!
Thank you!!!