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Annual reports : Gruissan - étang de l'Ayrolle, 2020
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 28th, 2020 until Saturday, May 2nd, 2020

Number of days of migration watch : 28
Number of hours of migration watch : 147h35

Number of birds : 43879
Saturday  2020 07h00-20h25- Duration : 13h25 
[Display all species]
Waxing Gibbous (9 days) : Moonrise at 14h42 and moonset at 4h15
Sun : sunrise at 06h38 and sunset at 20h50
Day : dawn at 06h07 and dusk at 21h21
Comments :
07h00-20h25 : obs Dominique Clément par intermittence
 The most significant species
Total
  Show phenology  Black Stork (Ciconia nigra)
5
  Show phenology  European Honey Buzzard (Pernis apivorus)
700
  Show phenology  Black Kite (Milvus migrans)
1087
  Show phenology  Short-toed Snake Eagle (Circaetus gallicus)
202
  Show phenology  Western Marsh Harrier (Circus aeruginosus)
238
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
293
  Show phenology  Osprey (Pandion haliaetus)
35
  Show phenology  Common Kestrel (Falco tinnunculus)
249
  Show phenology  Merlin (Falco columbarius)
3
  Show phenology  Eurasian Hobby (Falco subbuteo)
5
  Show phenology  European Turtle Dove (Streptopelia turtur)
1
  Show phenology  Common Swift (Apus apus)
17708
  Show phenology  Alpine Swift (Apus melba)
25
  Show phenology  European Bee-eater (Merops apiaster)
625
  Show phenology  Sand Martin (Riparia riparia)
22
  Show phenology  Barn Swallow (Hirundo rustica)
3321
  Show phenology  Western House Martin (Delichon urbicum)
663
  Show phenology  Western Yellow Wagtail (Motacilla flava)
153
  Daily total
1
migrant
228
migrants
29
migrants
1
migrant
1
migrant
2
migrants
1
migrant
7
migrants
1
migrant
2
migrants
1
migrant
14741
migrants
1
migrant
294
migrants
2
migrants
120
migrants
75
migrants
29
migrants
 Other species
Total
   Booted Eagle (Hieraaetus pennatus)
4
  Daily total
1
migrant
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