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Annual reports : Banc de l'Ilette , 2021
Watchpoint
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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 Saturday, August 21st, 2021 until Sunday, October 17th, 2021

Number of days of migration watch : 7
Number of hours of migration watch : 29h35

Number of birds : 41216
Sunday  2021 09h30-12h00- Duration : 02h30 
Waxing Gibbous (11 days) : Moonrise at 18h23 and moonset at 4h19
Sun : sunrise at 08h20 and sunset at 18h57
Day : dawn at 07h47 and dusk at 19h30
Comments :
09h30-12h00 : Site de Quend/Fort-Mahon plage. Compilation des données successives de François Méranger (9h30-11h00) et de Thierry Rigaux (11h00-12h00)
 The most significant species
Total
  Show phenology  Grey Heron (Ardea cinerea)
32
  Show phenology  Eurasian Sparrowhawk (Accipiter nisus)
8
  Show phenology  Stock Dove (Columba oenas)
64
  Show phenology  Common Wood Pigeon (Columba palumbus)
350
  Show phenology  Woodlark (Lullula arborea)
159
  Show phenology  Eurasian Skylark (Alauda arvensis)
215
  Show phenology  Barn Swallow (Hirundo rustica)
143
  Show phenology  Tree Pipit (Anthus trivialis)
69
  Show phenology  Meadow Pipit (Anthus pratensis)
483
  Show phenology  Grey Wagtail (Motacilla cinerea)
64
  Show phenology  Fieldfare (Turdus pilaris)
20
  Show phenology  Song Thrush (Turdus philomelos)
5
  Show phenology  Redwing (Turdus iliacus)
403
  Show phenology  Mistle Thrush (Turdus viscivorus)
52
  Show phenology  Eurasian Blue Tit (Cyanistes caeruleus)
48
  Show phenology  Western Jackdaw (Corvus monedula)
1050
  Show phenology  Common Starling (Sturnus vulgaris)
6353
  Show phenology  House Sparrow (Passer domesticus)
28
  Show phenology  Common Chaffinch (Fringilla coelebs)
27984
  Show phenology  Brambling (Fringilla montifringilla)
421
  Show phenology  European Serin (Serinus serinus)
-
  Show phenology  European Greenfinch (Carduelis chloris)
52
  Show phenology  European Goldfinch (Carduelis carduelis)
53
  Show phenology  Eurasian Siskin (Carduelis spinus)
1383
  Show phenology  Red Crossbill (Loxia curvirostra)
68
  Daily total
1
migrant
2
migrants
31
migrants
2
migrants
25
migrants
86
migrants
1
migrant
1
migrant
140
migrants
1
migrant
1
migrant
1
migrant
5
migrants
1
migrant
10
migrants
550
migrants
3400
migrants
+ 5 possibly local
25000
migrants
50
migrants
+ 1 possibly local
15
migrants
10
migrants
655
migrants
3
migrants
 Other species
Total
   Black-winged Kite (Elanus caeruleus)
1
  Daily total
1
migrant
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