The gathered data were entered into database with Wildlife Recorder programme (Version 3.4.1084) and processed.
The data on species abundance are, like all other data, presented graphically and enable a quick insight into the species abundance throughout the year. With the aid of WR programme, the data are calculated for 24 periods of the year, which means that they are calculated separately for the first and second halves of each month. The programme enables us to calculate the abundance with the average of the number of individuals per observation or percentage of observations, when a species was registered. For the presentation in this part, the adopted setting was used – the average number of individuals per observation. Graphical presentation of the abundance means:
The statistical part is presented by data on the number of individuals, number of observations, and on the time when a species was observed (the first, last, earliest, latest, and year ob observation).
First observation is the date when a species was observed for the first time in the area under consideration and when this information was published or entered into the database from a still unpublished source (personal ornithological notebook …). Last observation is the date when a species was observed for the last time in the area under consideration. In our case, this is till the end of 2009.
Data on the earliest or latest occurrence are interesting especially as far as summer species (migrators) are concerned, and perhaps for overwintering species, as they relate to their occurrence in view of the year. As far as overwintering species are concerned, we could thus speak of the earliest date of their occurrence as of the day of their arrival to the wintering grounds, which is most often in November, and of the latest date of their occurrence as of the day when they left the wintering grounds, which is usually in the following calendar year. The programme for the earliest date thus conveys the first observation of a species in the year, although this species arrived to this area to overwinter here a month or two ago in the previous calendar year.
Observations are supplemented with data on the site of observations. Data on the observation of a species, which are accurate enough that the site on which a species was registered can be gathered from them, are marked with toponym as well.
- 25 Jul 2009 (SSNP) – the species was observed in the area of Sečovlje Salina Nature Park;
- 25 Jul 2009 (Fontanigge, SSNP) - the species was observed in the area of Fontanigge;
- 25 Jul 2009, Estuary (Fontanigge, SSNP) - the species was observed in the area of the Dragonja River estuary
In rare and exceptional species, for which 10 observations are at hand at the most, all observations are stated. The observers with their abbreviations are also stated:
- G 16 ex., Morje/Sea (SSNP), 10 Dec 1878, BSCH.
- G 1 ex., Izliv/Estuary (Fontanigge, SSNP), 13 Nov 1982, IŠ.
- G 1 ex., Giassi - Curto (Fontanigge, SSNP) from 12 Nov 2007 to 24 Nov 2007, BK.
Each species is also specified with the status of its occurrence in the area under consideration, where:
= historical record;
– winter resident (species is either overwintering or occurring as a winter visitor in the area under consideration; also species registered in December and January);
– passage migrant (species occurs in the area under consideration at the time of spring and autumn migration);
– summer visitor (species occurs in the post-breeding period);
- breeder (species breeds in the area under consideration).