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Annual reports : Gruissan - étang de l'Ayrolle, 2018
Watchpoint
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Bird Reports
See cumulative daily totals and phenology graphs
 
Not available. This representation exists with one or all sites, one or all years and a single species.

Comparison of the duration of migration : This graph compares the duration of migration in number of days between different key percentages of migration. It is possible to compare several sites on the same graph.
Not available. This representation exists with one or all sites, one or all years and a single species.

Comparison of migration dates : This graph matches key percentages of migration with calendar days. It is possible to compare several sites in the same graph.
Not available. This representation exists with a single site, all years and a single species.

Interannual trend : This interannual graph represents the evolution between annual totals.
Not available. This representation exists with a single site, one or all years and a single species.

Phenological trend : This graph represents the evolution of the percentage of migration. Key percentages are indicated by vertical red bars.
Not available. This representation exists with a single site, all years and a single species.

Daily evolution : This interannual graph represents the trend of dates and key percentages of migration.
Not available. This representation exists with a single site, one or all years and a single species.

Totals by hour : This graph represents the distribution of the total number of birds by hour. When a specific year is chosen, the average of all the years of the migration watch is shown in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Seasonal phenology : This graph represents the distribution of the daily passage total (the decadary total is symbolized by red bars). If a specific year is selected, the average of all years is shown in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Relative migration : This graph represents the distribution in daily percentage of migration (percentage by decade being symbolized by red bars). If a specific year is chosen, the average of all years is shown in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Seasonal phenology (decade) : This graph represents the migration total by decade. If a specific year is selected, the average of all years of the migration survey is shown in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Hourly mean per decade : This graph shows the mean number of migrants per hour over ten-day periods. When a specific year is selected, the mean number of migrants calculated over all years of record is depicted in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Seasonal phenology (5-day period) : This graph shows the numbers of migratory individuals over 5-day periods. If a specific year is selected, the average of all years is shown in grey.
Not available. This representation exists with a single site, one or all years and a single species.

Hourly mean per 5-day period : This graph shows the mean number of individuals per hour over 5-day periods. When a specific year is selected, the mean number of migrants calculated over all years of record is shown in grey.
Available. This representation exists with a single site, a single year and all the species.

Summary table : This graph represents the seasonal totals as well as the latest totals of the migration watch. The upper table represents the most significant species for the watchpoint.
Available. This representation exists with a single site, a single year and all the species.

Migration synthesis : This graph is representing migration periods for each species at the site in a given year
Available. This representation exists with one or all sites, one or all years and all the species.

Observation effort : This table shows the observer pressure at the watchpoint for all years or day by day for a selected year.
Not available. This representation exists with all sites combined, one or all years and a single species.

Distribution Map : This map shows the relative importance of the watchpoints for a selected species. The dots represent the number of individuals per season.

Period : from Tuesday, January 23rd, 2018 until Sunday, April 1st, 2018

Number of days of migration watch : 18
Number of hours of migration watch : 92h15

Number of birds : 9110
Sunday  2018 07h00-17h00- Duration : 10h00 
[Display all species]
Waning Gibbous (15 days) : Moonrise at 21h23 and moonset at 8h18
Sun : sunrise at 07h28 and sunset at 20h14
Day : dawn at 07h00 and dusk at 20h42
Comments :
07h00-17h00 : avec S. Garandeau, A. Cornet,S. et JM Toublanc, A. Chaillou, F. Garcia
 The most significant species
Total
  Show phenology  Great Cormorant (Phalacrocorax carbo)
491
  Show phenology  Grey Heron (Ardea cinerea)
30
  Show phenology  Purple Heron (Ardea purpurea)
3
  Show phenology  White Stork (Ciconia ciconia)
2163
  Show phenology  Black Kite (Milvus migrans)
387
  Show phenology  Red Kite (Milvus milvus)
8
  Show phenology  Short-toed Snake Eagle (Circaetus gallicus)
240
  Show phenology  Western Marsh Harrier (Circus aeruginosus)
101
  Show phenology  Pallid Harrier (Circus macrourus)
1
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
215
  Show phenology  Common Buzzard (Buteo buteo)
28
  Show phenology  Osprey (Pandion haliaetus)
20
  Show phenology  Common Kestrel (Falco tinnunculus)
12
  Show phenology  Mediterranean Gull (Ichthyaetus melanocephalus)
1
  Show phenology  Black-headed Gull (Chroicocephalus ridibundus)
32
  Show phenology  Slender-billed Gull (Chroicocephalus genei)
25
  Show phenology  Lesser Black-backed Gull (Larus fuscus)
26
  Show phenology  Sandwich Tern (Sterna sandvicensis)
51
  Show phenology  Common Tern (Sterna hirundo)
11
  Show phenology  Common Wood Pigeon (Columba palumbus)
303
  Show phenology  Eurasian Crag Martin (Ptyonoprogne rupestris)
180
  Show phenology  Barn Swallow (Hirundo rustica)
107
  Show phenology  Western House Martin (Delichon urbicum)
60
  Show phenology  Meadow Pipit (Anthus pratensis)
5
  Show phenology  Western Yellow Wagtail (Motacilla flava)
2
  Show phenology  White Wagtail (Motacilla alba)
930
  Show phenology  European Serin (Serinus serinus)
265
  Show phenology  European Goldfinch (Carduelis carduelis)
42
  Show phenology  Common Linnet (Linaria cannabina)
140
  Show phenology  Common Reed Bunting (Emberiza schoeniclus)
217
  Daily total
27
migrants
2
migrants
3
migrants
45
migrants
33
migrants
2
migrants
7
migrants
11
migrants
1
migrant
75
migrants
3
migrants
14
migrants
3
migrants
1
migrant
24
migrants
9
migrants
7
migrants
44
migrants
6
migrants
38
migrants
20
migrants
26
migrants
20
migrants
3
migrants
1
migrant
27
migrants
160
migrants
20
migrants
72
migrants
1
migrant
 Other species
Total
   Greater Flamingo (Phoenicopterus roseus)
120
   Booted Eagle (Hieraaetus pennatus)
1
   Common Crane (Grus grus)
925
   Eurasian Oystercatcher (Haematopus ostralegus)
2
   Pied Avocet (Recurvirostra avosetta)
19
   Grey Plover (Pluvialis squatarola)
93
   unidentified Sandpiper / Stint (Calidris / Limi...)
1420
   Eurasian Curlew (Numenius arquata)
91
   Ruddy Turnstone (Arenaria interpres)
2
   Yellow-legged Gull (Larus michahellis)
50
   Crested Lark (Galerida cristata)
1
   Black Redstart (Phoenicurus ochruros)
2
   Sardinian Warbler (Curruca melanocephala)
2
   Carrion Crow (Corvus corone)
2
  Daily total
120
migrants
1
migrant
2
migrants
2
migrants
4
migrants
93
migrants
1420
migrants
41
migrants
2
migrants
50
migrants
1
migrant
2
migrants
2
migrants
2
migrants
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