Migration Count Data

Daily Totals

Our annual autumn count runs from August 12th until October 21st. During that period you can find our daily and season totals updated daily on Trektellen.org and embedded below on this page. These are our raw results, uncorrected for ‘double counts’: birds possibly counted from both stations. We distinguish raw and unprocessed data, with these double counts, from cleaned and processed data, without double counts.

You can browse the daily totals below. If, for some reason, the daily totals don't show, click on the images to browse the results on Trektellen.org directly.

 
 

Sakhalvasho

Station 1

 

Shuamta

Station 2

Autumn Count 2019

We have so far counted

0 raptors

 
 
 

Annual totals

Every year since the autumn count of 2012 we have surpassed the million birds threshold, firmly placing Batumi amongst the world's biggest raptor migration bottlenecks. Figure 1 shows the processed totals (corrected for double counts).

To monitor the Batumi bottleneck and count more than a million raptors in the autumn season, we depend on the generous support of donators, our BRC Members and many volunteer counters and coordinators. Want to help us?

 
 

Totals of all raptors

Figure 1: The processed annual totals of raptors migrating through the Batumi bottleneck, since standardised counts began in 2011. The non-standardised totals contain irregular observations of non-target species, birds counted outside of standardised count periods, and pilot or experimental counts. In 2011 Steppe Buzzards were not monitored.
 

 

Processed totals of the standardised observations

Table 1 and 2 show the annual totals of all target species and their corresponding morphological groups, based on standardised species records during autumn migration. These totals are strictly filtered for any possible double counts and therefore lower than the raw totals as listed on Trektellen.

Entries with an asterisk (*) indicate that species has not been monitored in the corresponding year.

 

Where are the other species?

Over the years we have conducted several experimental counts and we have now settled on the target species you can find in table 1 and 2. For an overview of all the species that we have recorded in the past 10 years, have a look at the raw Trektellen totals:

Where are the counts from 2008-2010?

Between 2008 and 2010 we conducted 3 pilot counts, which have guided the selection of target species for 2011 onwards. As this makes it hard to compare data from the period 2008-2010 and 2011 until now, we have decided not to show the pilot counts here. Use the links to Trektellen above to browse through the results of these pilot counts.

 
 
 

Table 1: Standardised totals of target raptor species

2018 2017 2016 2015 2014 2013 2012 2011
Buzzards
European Honey-buzzard 485.917 518.242 509.112 559.790 656.171 427.183 643.212 370.587
Steppe Buzzard 300.757 281.403 203.210 199.620 486.467 415.439 185.317 *
Common Buzzard 8 8 17 19 8 14 10 0
Crested Honey-buzzard 9 13 10 27 19 38 12 8
Rough-legged Buzzard 0 0 0 2 0 0 0 0
Pernis sp. 8 2 2 0 5 11 0 0
Buzzard sp. 15.621 0 1.732 0 217 184 178 2.054
Kites
Black Kite 149.077 159.161 163.239 118.466 104.669 104.374 101.279 80.206
Red Kite 0 0 0 0 0 0 1 0
Eagles
Lesser Spotted Eagle 4.278 4.696 3.721 4.088 2.467 3.845 4.536 5.844
Greater Spotted Eagle 426 331 273 397 243 203 160 220
Steppe Eagle 437 271 249 477 260 348 165 183
Eastern Imperial Eagle 62 44 29 33 46 37 11 37
Golden Eagle 0 0 0 0 2 1 0 0
Booted Eagle 5.188 6.814 7.370 6.639 6.143 6.150 7.001 6.497
Short-toed Eagle 1.788 1.436 1.443 1.329 1.405 1.376 1.348 1.293
Osprey 129 119 143 136 103 147 80 122
White-tailed Eagle 5 4 7 7 4 3 4 1
Large eagle sp. 5.343 3.417 1.967 2.404 7.256 6.446 2.390 2.646
Harriers
Marsh Harrier 8.081 7.418 6.111 8.458 7.036 7.597 5.526 5.084
Montagu's Harrier 1.938 3.591 2.781 3.262 2.802 3.245 5.010 2.753
Pallid Harrier 517 1.721 364 748 838 747 801 365
Hen Harrier 41 36 6 29 41 16 19 6
Ringtail Harrier sp. 5.447 3.128 3.453 5.589 5.892 5.398 6.650 4.314
Harrier sp. 93 36 58 8 15 30 10 32
Vultures
Egyptian Vulture 17 19 28 27 19 36 24 40
Griffon Vulture 3 4 4 1 9 9 1 2
Black Vulture 0 1 0 1 0 0 0 1
Falcons
Eleonora's Falcon 0 3 0 0 0 0 1 1
Lanner Falcon 0 0 0 0 0 0 0 1
Saker Falcon 1 0 1 2 3 1 1 2
Peregrine Falcon 22 26 26 40 32 28 48 31
Large falcon sp. 8 1 1 6 1 5 11 14
Specs
Medium raptor sp. 92.104 36.231 45.299 53.303 32.124 160.557 14.722 9.774
Raptor sp. 428 277 3 0 0 0 0 0
Total 1.077.753 1.028.453 950.659 964.908 1.314.297 1.143.468 978.528 492.118
 

Table 2: Standardised totals of target non-raptor species

year 2018 2017 2016 2015 2014 2013 2012 2011
White Stork 577 410 459 199 1.422 417 444 572
Black Stork 1.750 1.419 1.200 1.249 1.465 1.483 1.268 992
Stork sp. 14 0 0 0 0 25 10 0
Eurasian Crane 165 100 26 212 114 42 21 4
Demoiselle Crane 0 0 0 0 0 0 0 0
Great White Pelican 0 0 0 2 0 0 0 0
Dalmatian Pelican 0 0 2 0 0 3 0 0
Roller 922 702 1.159 450 2.161 1.477 1.778 1.253
Turtle Dove 686 1.714 1.934 461 1.099 4.571 * *
Common Woodpigeon 292 157 450 32 1.580 402 * *
Stock Dove 713 387 765 800 764 1.300 * *
Total 5.119 4.889 5.995 3.405 8.605 9.720 3.521 2.821
 

Previous Seasons 

 
20170827-Station-1-from-Station-2-01-Web.jpg

In spring 2019 we counted

462 041 raptors

 

15815MediumRaptors6066Sparrowhawks2981raptor sp.1170Levant Sparrowhawks1129large eagle sp870Short-toed Eagles405Sparrowhawk / Levant Sparrowhawks293Buzzard/Honey Buzzards265Black Storks206Woodpigeons116Cranes112Greater Spotted Eagles90Hen Harriers71Steppe Eagles64White Storks54Montagu's/Pallid Harriers39Hen/Montagu's/Pallid Harriers27Imperial Eagles26Long-legged Buzzards25Kestrels23Hobbys22Ospreys21Common / Lesser Kestrels13harrier sp.13Stock Doves11Egyptian Vultures9European Rollers8Merlins6Lesser Kestrels3Crested Honey Buzzards3Griffon Vultures2White-tailed Eagles2buzzard sp.2Red-footed Falcons2Lanner / Saker / Peregrines2Peregrines1Cinereous Vulture1Common Buzzard1Golden Eagle1Short-eared Owl