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Annual reports : Gruissan - étang de l'Ayrolle, 2019
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 15th, 2019 until Sunday, April 14th, 2019

Number of days of migration watch : 37
Number of hours of migration watch : 166h54

Number of birds : 55370
Sunday  2019 07h00-16h00 07h00-16h00 - Duration : 09h00 
Waxing Gibbous (9 days) : Moonrise at 14h30 and moonset at 4h30
Sun : sunrise at 07h06 and sunset at 20h28
Day : dawn at 06h37 and dusk at 20h58
Comments :
07h00-08h00 : obs Jill Butler - Ted Green - Dominique Clément - Sandy Garandeau - Claudine Bouffet - Lionel Ferradou - Emilie Verrier - JLuc Guillemenet,08h00-09h00 : obs Jill Butler - Ted Green - Dominique Clément - Sandy Garandeau - Claudine Bouffet - Lionel Ferradou - Emilie Verrier - JLuc Guillemenet,09h00-10h00 : obs Jill Butler - Ted Green - Dominique Clément - Sandy Garandeau - Claudine Bouffet - Lionel Ferradou - Emilie Verrier - JLuc Guillemenet,10h00-10h30 : obs Jill Butler - Ted Green - Dominique Clément - Sandy Garandeau - Lionel Ferradou - Emilie Verrier - JLuc Guillemenet,10h30-16h00 : obs Dominique Clément - Fred Garcia - Claudine Bouffet
 The most significant species
Total
 Show the data Show phenology Common species Great Cormorant (Phalacrocorax carbo)
1586
 Show the data Show phenology Common species Black Stork (Ciconia nigra)
30
 Show the data Show phenology Common species White Stork (Ciconia ciconia)
2549
 Show the data Show phenology Common species Black Kite (Milvus migrans)
1720
 Show the data Show phenology Common species Red Kite (Milvus milvus)
26
 Show the data Show phenology Common species Short-toed Snake Eagle (Circaetus gallicus)
40
 Show the data Show phenology Common species Western Marsh Harrier (Circus aeruginosus)
706
 Show the data Show phenology Common species Hen Harrier (Circus cyaneus)
5
 Show the data Show phenology Common species Montagu's Harrier (Circus pygargus)
11
 Show the data Show phenology Common species Eurasian Sparrowhawk (Accipiter nisus)
1045
 Show the data Show phenology Common species Common Buzzard (Buteo buteo)
25
 Show the data Show phenology Common species Osprey (Pandion haliaetus)
52
 Show the data Show phenology Common species Common Kestrel (Falco tinnunculus)
653
 Show the data Show phenology Common species Red-footed Falcon (Falco vespertinus)
2
 Show the data Show phenology Common species Merlin (Falco columbarius)
21
 Show the data Show phenology Common species Peregrine Falcon (Falco peregrinus)
2
 Show the data Show phenology Common species Whimbrel (Numenius phaeopus)
22
 Show the data Show phenology Common species Mediterranean Gull (Larus melanocephalus)
27
 Show the data Show phenology Common species Slender-billed Gull (Chroicocephalus genei)
52
 Show the data Show phenology Common species Lesser Black-backed Gull (Larus fuscus)
186
 Show the data Show phenology Common species Common Wood Pigeon (Columba palumbus)
2150
 Show the data Show phenology Common species Common Swift (Apus apus)
496
 Show the data Show phenology Common species Alpine Swift (Apus melba)
139
 Show the data Show phenology Common species European Bee-eater (Merops apiaster)
2
 Show the data Show phenology Common species Eurasian Hoopoe (Upupa epops)
9
 Show the data Show phenology Common species Sand Martin (Riparia riparia)
302
 Show the data Show phenology Common species Barn Swallow (Hirundo rustica)
14244
 Show the data Show phenology Common species Common House Martin (Delichon urbicum)
1698
 Show the data Show phenology Common species Western Yellow Wagtail (Motacilla flava)
3774
  Daily total
374
migrants
3
migrants
47
migrants
67
migrants
4
migrants
4
migrants
53
migrants
1
migrant
3
migrants
111
migrants
2
migrants
4
migrants
33
migrants
2
migrants
3
migrants
2
migrants
8
migrants
21
migrants
5
migrants
2
migrants
15
migrants
144
migrants
6
migrants
2
migrants
2
migrants
4
migrants
767
migrants
1
migrant
3
migrants
 Other species
Total
 Show the data Common species Western Cattle Egret (Bubulcus ibis)
13
 Show the data Common species Great Egret (Casmerodius albus)
32
 Show the data Common species Glossy Ibis (Plegadis falcinellus)
13
 Show the data Common species unidentified Falcon (Falco sp.)
1
 Show the data Common species Arctic Skua (Stercorarius parasiticus)
7
  Daily total
13
migrants
5
migrants
3
migrants
1
migrant
7
migrants
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