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Annual reports : Gruissan-Narbonne, 2021
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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, July 15th, 2021 until Thursday, September 16th, 2021

Number of days of migration watch : 30
Number of hours of migration watch : 197h35

Number of birds : 129076
Thursday  2021 07h40-19h10- Duration : 11h30 
Waxing Gibbous (9 days) : Moonrise at 17h59 and moonset at 1h54
Sun : sunrise at 07h29 and sunset at 19h55
Day : dawn at 07h00 and dusk at 20h24
Comments :
07h40-19h10 : Observateur : Florian Escot, Stella Roumat, Anne Ledee, Jean Luc Dedieu, Clodine Gequiere //Arrêt du suivi de 12h à 13h30 pour cause de pluie, levée de trame tardive mais beau déblocage dans l’après-midi ! Le roc reprend du service enfin !!!
 The most significant species
Total
  Show phenology  Grey Heron (Ardea cinerea)
10
  Show phenology  White Stork (Ciconia ciconia)
11394
  Show phenology  European Honey Buzzard (Pernis apivorus)
2265
  Show phenology  Black Kite (Milvus migrans)
2162
  Show phenology  Red Kite (Milvus milvus)
8
  Show phenology  Short-toed Snake Eagle (Circaetus gallicus)
16
  Show phenology  Western Marsh Harrier (Circus aeruginosus)
132
  Show phenology  Montagu's Harrier (Circus pygargus)
50
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
652
  Show phenology  Common Buzzard (Buteo buteo)
13
  Show phenology  Booted Eagle (Aquila pennata)
-
  Show phenology  Osprey (Pandion haliaetus)
21
  Show phenology  Lesser Kestrel (Falco naumanni)
3
  Show phenology  Common Kestrel (Falco tinnunculus)
73
  Show phenology  Common / Lesser Kestrel (Falco naumanni / tinnu...)
8
  Show phenology  Eurasian Hobby (Falco subbuteo)
20
  Show phenology  Peregrine Falcon (Falco peregrinus)
-
  Show phenology  Common Wood Pigeon (Columba palumbus)
17
  Show phenology  Common Swift (Apus apus)
104733
  Show phenology  Alpine Swift (Apus melba)
40
  Show phenology  European Bee-eater (Merops apiaster)
852
  Show phenology  European Roller (Coracias garrulus)
13
  Show phenology  Sand Martin (Riparia riparia)
758
  Show phenology  Barn Swallow (Hirundo rustica)
4432
  Show phenology  Common House Martin (Delichon urbicum)
368
  Show phenology  Tree Pipit (Anthus trivialis)
16
  Show phenology  Meadow Pipit (Anthus pratensis)
2
  Show phenology  Western Yellow Wagtail (Motacilla flava)
115
  Show phenology  Northern Wheatear (Oenanthe oenanthe)
-
  Show phenology  Common Reed Bunting (Emberiza schoeniclus)
4
  Daily total
2
migrants
46
migrants
7
migrants
3
migrants
1
migrant
9
migrants + 2 local
88
migrants + 17 staging
2
migrants
63
migrants
5
migrants + 2 local
+ 1 reverse migrant
7
migrants + 4 staging
2
migrants
62
migrants
7
migrants
14
migrants
+ 1 local
17
migrants
12
migrants
18
migrants
149
migrants
1
migrant
29
migrants
3448
migrants
274
migrants
4
migrants
2
migrants
16
migrants
+ 1 staging
2
migrants
 Other species
Total
   Mute Swan (Cygnus olor)
-
   Black Swan (Cygnus atratus)
-
   Bonelli's Eagle (Aquila fasciata)
-
   Water Rail (Rallus aquaticus)
-
   Common Greenshank (Tringa nebularia)
-
   Green Sandpiper (Tringa ochropus)
-
  Show phenology  unidentified Martin (Hirundinidae sp.)
529
   Dartford Warbler (Sylvia undata)
-
  Daily total
+ 4 local
+ 1 local
+ 3 local
+ 2 local
+ 1 staging
+ 1 staging
529
migrants
+ 1 local
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