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Annual reports : Gruissan - étang de l'Ayrolle, 2023
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 Sunday, February 19th, 2023 until Wednesday, March 15th, 2023

Number of days of migration watch : 8
Number of hours of migration watch : 54h15

Number of birds : 29260
Wednesday  2023 06h45-16h00- Duration : 09h15 
[Display all species]
Waning Crescent (23 days) : Moonrise at 2h48 and moonset at 11h14
Sun : sunrise at 06h59 and sunset at 18h53
Day : dawn at 06h30 and dusk at 19h22
Comments :
06h45-16h00 : Domi Clément, Mathias Billiald, Claudine Bouffet
 The most significant species
Total
  Show phenology  Great Cormorant (Phalacrocorax carbo)
29
  Show phenology  Grey Heron (Ardea cinerea)
31
  Show phenology  White Stork (Ciconia ciconia)
2607
  Show phenology  Black Kite (Milvus migrans)
360
  Show phenology  Western Marsh Harrier (Circus aeruginosus)
17
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
26
  Show phenology  Osprey (Pandion haliaetus)
1
  Show phenology  Common Kestrel (Falco tinnunculus)
53
  Show phenology  Northern Lapwing (Vanellus vanellus)
969
  Show phenology  Black-headed Gull (Chroicocephalus ridibundus)
237
  Show phenology  Slender-billed Gull (Chroicocephalus genei)
18
  Show phenology  Lesser Black-backed Gull (Larus fuscus)
232
  Show phenology  Sandwich Tern (Sterna sandvicensis)
76
  Show phenology  Stock Dove (Columba oenas)
20
  Show phenology  Common Wood Pigeon (Columba palumbus)
1818
  Show phenology  Alpine Swift (Apus melba)
6
  Show phenology  Eurasian Skylark (Alauda arvensis)
12888
  Show phenology  Eurasian Crag Martin (Ptyonoprogne rupestris)
806
  Show phenology  Barn Swallow (Hirundo rustica)
29
  Show phenology  Common House Martin (Delichon urbicum)
47
  Show phenology  White Wagtail (Motacilla alba)
2813
  Show phenology  Common Starling (Sturnus vulgaris)
1020
  Show phenology  Common Chaffinch (Fringilla coelebs)
2432
  Show phenology  European Serin (Serinus serinus)
266
  Show phenology  Common Linnet (Carduelis cannabina)
112
  Show phenology  Common Reed Bunting (Emberiza schoeniclus)
899
  Daily total
16
migrants
7
migrants
592
migrants
208
migrants
12
migrants
12
migrants
1
migrant
22
migrants
7
migrants
33
migrants
7
migrants
68
migrants
7
migrants
1
migrant
478
migrants
5
migrants
3
migrants
182
migrants
20
migrants
21
migrants
433
migrants
17
migrants
5
migrants
183
migrants
29
migrants
143
migrants
 Other species
Total
   Mallard (Anas platyrhynchos)
37
   Northern Pintail (Anas acuta)
18
  Show phenology  Little Egret (Egretta garzetta)
1
   Great Egret (Casmerodius albus)
1
   Eurasian Spoonbill (Platalea leucorodia)
3
   Pied Avocet (Recurvirostra avosetta)
18
   Eurasian Curlew (Numenius arquata)
38
   Green Sandpiper (Tringa ochropus)
1
   Common Kingfisher (Alcedo atthis)
1
   Pipit (Anthus sp.)
7
   Grey Wagtail (Motacilla cinerea)
5
   Black Redstart (Phoenicurus ochruros)
1
   European Stonechat (Saxicola rubicola)
2
   Carrion Crow (Corvus corone)
2
   unidentified Corvid (Corvidae sp.)
6
   unidentified Passerine (Passeriformes sp.)
256
  Daily total
35
migrants
15
migrants
1
migrant
1
migrant
3
migrants
18
migrants
2
migrants
1
migrant
1
migrant
7
migrants
1
migrant
1
migrant
2
migrants
1
migrant
2
migrants
134
migrants
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