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Annual reports : Gruissan - étang de l'Ayrolle, 2022
Watchpoint
Graphs
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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 Thursday, January 6th, 2022 until Sunday, May 8th, 2022

Number of days of migration watch : 22
Number of hours of migration watch : 121h40

Number of birds : 88347
Sunday  2022 07h00-15h00- Duration : 08h00 
First Quarter (7 days) : Moonrise at 12h13 and moonset at 3h01
Sun : sunrise at 06h31 and sunset at 20h56
Day : dawn at 05h59 and dusk at 21h28
Comments :
07h00-15h00 : domi Clément, Claudine Bouffet, Eric Czyz
 The most significant species
Total
  Show phenology  Great Cormorant (Phalacrocorax carbo)
496
  Show phenology  White Stork (Ciconia ciconia)
5990
  Show phenology  European Honey Buzzard (Pernis apivorus)
768
  Show phenology  Black Kite (Milvus migrans)
1161
  Show phenology  Red Kite (Milvus milvus)
25
  Show phenology  Western Marsh Harrier (Circus aeruginosus)
1157
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
870
  Show phenology  Osprey (Pandion haliaetus)
45
  Show phenology  Common Kestrel (Falco tinnunculus)
512
  Show phenology  Red-footed Falcon (Falco vespertinus)
1
  Show phenology  Merlin (Falco columbarius)
15
  Show phenology  Whimbrel (Numenius phaeopus)
10
  Show phenology  Slender-billed Gull (Chroicocephalus genei)
74
  Show phenology  Little Tern (Sternula albifrons)
53
  Show phenology  Whiskered Tern (Chlidonias hybrida)
9
  Show phenology  Common Swift (Apus apus)
46544
  Show phenology  Alpine Swift (Apus melba)
120
  Show phenology  European Bee-eater (Merops apiaster)
685
  Show phenology  Sand Martin (Riparia riparia)
251
  Show phenology  Barn Swallow (Hirundo rustica)
6666
  Show phenology  Red-rumped Swallow (Cecropis daurica)
79
  Show phenology  Common House Martin (Delichon urbicum)
5499
  Show phenology  Western Yellow Wagtail (Motacilla flava)
2737
  Show phenology  European Goldfinch (Carduelis carduelis)
36
  Show phenology  Common Linnet (Carduelis cannabina)
1551
  Daily total
20
migrants
2
migrants
756
migrants
21
migrants
1
migrant
16
migrants
7
migrants
11
migrants
15
migrants
1
migrant
1
migrant
6
migrants
12
migrants
42
migrants
9
migrants
45500
migrants
78
migrants
483
migrants
242
migrants
2549
migrants
76
migrants
4128
migrants
2599
migrants
5
migrants
34
migrants
 Other species
Total
  Show phenology  Little Egret (Egretta garzetta)
12
   Glossy Ibis (Plegadis falcinellus)
18
   Pallid / Montagu's Harrier (Circus macrourus / ...)
1
   Grey Wagtail (Motacilla cinerea)
2
   European Pied Flycatcher (Ficedula hypoleuca)
1
  Daily total
6
migrants
6
migrants
1
migrant
1
migrant
1
migrant
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