1 66 
ALLEN'S NATURALIST’S LIBRARY. 
Young— Similar to the adults, hut having a brown shade 
over the grey of the upper parts, and slightly obscuring the 
v.hite scapulars; the under surface regularly barred with 
fine crescentic markings on the feathers, excepting on the 
throat, abdomen, and under tail-coverts, which are all pure 
Kange in Great Eritain. — Like the foregoing snecies, it is an 
autumn and winter visitant, and appears to be quite as common 
as Lamus excubitor in some years. 
Eange outside the British Islands.— Extends from Eastern Siberia 
south of lat. 65° N., as far west as Northern Russia. In many 
of its western habitats it is said to interbreed with Z. excubitor 
Much has been written about the distribution of this species 
and the various allied forms. Mr. Dresser has contributed a 
long article to the “Ibis” for 1892 (pp. 374-380), which does not 
seem to lay down any definite conclusions. Much more to 
the purpose are the remarks of Mr. Stejneger (l.c.), who as 
usual, puts forward some tangible results of his work. Two 
propositions are set before us, either to consider that there is 
b “ t , on ® species of Great Grey Shrike, ranging over the whole 
ofthe I aliearctic and Nearctic Regions, including Z. excubitor 
Z. sibiricus (L. major , auct.), and even Z. borealis of North 
America— or to recognise three forms, Z. excubitor from Cen- 
tral and Southern Europe, Z. sibiricus, which ranges from the 
Japanese Sea all through Northern Siberia and Northern Russia 
to Norwegian Finmark, and Z. borealis, confined strictly 'to 
North America. This latter conclusion, which commends 
it se lf also t0 Dr. Stejneger, seems to he the most scientific 
explanation of the distribution of the three races of Grey 
Shrike under consideration. It is the present race which is 
figured in the plate (XVIII). 
Habits— These appear to be similar to those of Z. excubitor. 
Nest— Not yet described, but doubtless similar to that of the 
foregoing species. 
Eggs— Of these nothing has as yet been recorded, but they 
will doubtless be found to resemble those of Z. excubitor 
