Kapitel 6: Die Rettung der Schreikraniche

Conclusions

I
n total, we know 20 pairs from summer recordings. 2 pairs from summer 2000 (12 and 30/00) may be dead or divorced. Last recording in ANWR (winter 00/01) gave 40 pairs in total together with first winter 99/00.

4 calls (20%) have no correlation assignment with either from another summer or one of the two winter calls analyses. 4 pairs have only correlations with other summer recordings but none with any of the winter. Hence, for 8 pairs (40%) I have found no correlation with any of the winter pairs.

4 pairs have been found in both winter and 3 summer recording analyses (5 matches), one other pair had 4 matches. 4 pairs have only summer correlations.

From the other viewpoint, ANWR, 11 of the 40 pairs we know from there have been found in the summer recordings, 2 of them may be dead or divorced. From 30 pairs in winter 2001, 10 (= 30%) have been correlated with summer pairs, from 28 pairs in winter 99/00, seven (= 25%) have been correlated with summer pairs.

December 27, 2002
Dr. Bernhard Wessling

zurück weiter
Hauptmenue | Vorwort | Kap 1: Bild und Ton | Kap 2: Kranicharten | Kap 3: Kennenlernen, Verhalten und Intelligenz
Kap 4: Graue Kraniche | Kap 5: Mandschurenkraniche | Kap 6: Schreikraniche | Kap 7: Resumés | Kap 8: Anhang