The river is rather broad in both areas and repeatedly sphts into several 
arms, thus providing large shingle banks which might be suitable for 
nesting. 
Acknowledgments 
I Thank G. Grempe for making available a translated version of the relevant 
text in Airumyan et al. (1987), J. Wittenberg for additional material and M. 
Beaman for comments on a draft of this paper. 
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