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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 07h00-17h00 - Duration : 10h00 
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 the data Show phenology Common species Great Cormorant (Phalacrocorax carbo)
491
 Show the data Show phenology Common species Grey Heron (Ardea cinerea)
30
 Show the data Show phenology Common species Purple Heron (Ardea purpurea)
3
 Show the data Show phenology Common species White Stork (Ciconia ciconia)
2163
 Show the data Show phenology Common species Black Kite (Milvus migrans)
387
 Show the data Show phenology Common species Red Kite (Milvus milvus)
8
 Show the data Show phenology Common species Short-toed Snake Eagle (Circaetus gallicus)
240
 Show the data Show phenology Common species Western Marsh Harrier (Circus aeruginosus)
101
 Show the data Show phenology Common species Pallid Harrier (Circus macrourus)
1
 Show the data Show phenology Common species Eurasian Sparrowhawk (Accipiter nisus)
215
 Show the data Show phenology Common species Common Buzzard (Buteo buteo)
28
 Show the data Show phenology Common species Osprey (Pandion haliaetus)
20
 Show the data Show phenology Common species Common Kestrel (Falco tinnunculus)
12
 Show the data Show phenology Common species Mediterranean Gull (Larus melanocephalus)
1
 Show the data Show phenology Common species Common Black-headed Gull (Chroicocephalus ridib...)
32
 Show the data Show phenology Common species Slender-billed Gull (Chroicocephalus genei)
25
 Show the data Show phenology Common species Lesser Black-backed Gull (Larus fuscus)
26
 Show the data Show phenology Common species Sandwich Tern (Sterna sandvicensis)
51
 Show the data Show phenology Common species Common Tern (Sterna hirundo)
11
 Show the data Show phenology Common species Common Wood Pigeon (Columba palumbus)
303
 Show the data Show phenology Common species Eurasian Crag Martin (Ptyonoprogne rupestris)
180
 Show the data Show phenology Common species Barn Swallow (Hirundo rustica)
107
 Show the data Show phenology Common species Common House Martin (Delichon urbicum)
60
 Show the data Show phenology Common species Meadow Pipit (Anthus pratensis)
5
 Show the data Show phenology Common species Yellow Wagtail (Motacilla flava)
2
 Show the data Show phenology Common species White Wagtail (Motacilla alba)
930
 Show the data Show phenology Common species European Serin (Serinus serinus)
265
 Show the data Show phenology Common species European Goldfinch (Carduelis carduelis)
42
 Show the data Show phenology Common species Common Linnet (Carduelis cannabina)
140
 Show the data Show phenology Common species 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
 Show the data Common species Greater Flamingo (Phoenicopterus roseus)
120
 Show the data Common species Booted Eagle (Aquila pennata)
1
 Show the data Common species Common Crane (Grus grus)
925
 Show the data Common species Eurasian Oystercatcher (Haematopus ostralegus)
2
 Show the data Common species Pied Avocet (Recurvirostra avosetta)
19
 Show the data Common species Grey Plover (Pluvialis squatarola)
93
 Show the data Common species unidentified Sandpiper / Stint (Calidris / Limi...)
1420
 Show the data Common species Eurasian Curlew (Numenius arquata)
91
 Show the data Common species Ruddy Turnstone (Arenaria interpres)
2
 Show the data Common species Yellow-legged Gull (Larus michahellis)
50
 Show the data Common species Crested Lark (Galerida cristata)
1
 Show the data Common species Black Redstart (Phoenicurus ochruros)
2
 Show the data Common species Sardinian Warbler (Sylvia melanocephala)
2
 Show the data Common species 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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