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Tuesday, May 23rd, 2023
tipnews
Birds
Precise sightings localization
posted by Bernard Volet
 
Saturday, May 20th, 2023
tipnews
Birds
Ducks families

At this time of year more and more ducks families are observed on lakes and rivers. Apart from Mallards, all kinds of wild ducks are monitored by the "monitoring of selected species" program for which the total number of brood is counted. In order to obtain an accurate synthesis at the end of the breeding season we need precise information. For these observations it is therefore important to mention specifically the number of families present and, for each family, the amount of chicks and their size has to be specified (remarks field). The following link gives indications on how to estimate the size of chicks relatively to the size of adults: Altersbestimmung bei Jungenten / Détermination de l'âge des canetons).

Thanks in advance for these precisions. They simplify the data analysis and the monitoring of rare species.

posted by Bernard Volet
 
Thursday, May 11th, 2023
avinews
Birds
Bulletin of the Ornithological Information Service from the Swiss Ornithological Institute
posted by Bernard Volet
 
Monday, May 8th, 2023
tipnews
Birds
Help us to keep the photo gallery attractive!
posted by Bernard Volet
 
Friday, April 14th, 2023
tipnews
Birds
The atlas codes provide essential information!
posted by Bernard Volet
 
Wednesday, April 5th, 2023
avinews
Birds
Communication of the Swiss Rarities Committee
posted by Bernard Volet
 
Friday, March 31st, 2023
tipnews
Birds
The House Sparrow south of Bellinzona
posted by Bernard Volet
 
Wednesday, March 22nd, 2023
technews
ornitho.ch changes into new plumage
posted by Hans Schmid
 
Wednesday, March 15th, 2023
tipnews
Birds
Stonechat or Whinchat?
posted by Bernard Volet
 
Thursday, March 9th, 2023
tipnews
Birds
Absence data is also valuable
posted by Bernard Volet
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