التفاصيل البيبلوغرافية
| العنوان: |
Recensement hivernal des oiseaux d'eau: Novembre 2019 et janvier 2020. (French) |
| Alternate Title: |
Winter census of waterbirds November 2019 and January 2020. (English) |
| المؤلفون: |
Barbalat, Alain |
| المصدر: |
Nos Oiseaux; sep2020, Vol. 67 Issue 3, p136-140, 5p |
| مصطلحات موضوعية: |
BIRD population estimates, WATER birds, WINTER, RED-crested pochard, TUFTED duck |
| مستخلص: |
The article provides an overview of winter census of waterbirds November 2019 and January 2020 in Switzerland. It mentions that the censuses of November and January show a further decline in the number of wintering waterbirds. It also mentions that numbers of Redheads Netta rufina and Tufted Ducks Aythya fuligula and milouin A. ferina are in sharp decline, while the Black-necked Grebe Podiceps nigricollis broke abundance records. |
| قاعدة البيانات: |
Complementary Index |
