On the Red-tailed Bush-Lark. 467 
ervey as in the adults, but fringed at the tips with white ; the 
tail is as in the adult, but narrowly fringed with white. The 
breast is pale buff, striped with blackish ; the flanks are grey, 
fringed with buffish white. ‘ Naked skin round eye grey, 
inclining to purplish.” 
In the adult specimens the only sexual difference that I 
can find is in the colour of the breast. In the male this 
is bright vinaceous, while it is much duller aud has a leaden- 
blue tinge in the female. 
Notes on the Red-tailed Bush-Lark (Mirafra 
erythropygia) *. By A. L. Burrerr, Superintendent of 
Game-Preservation, Sudan. 
On a recent journey in the Bahr-el-Ghazal Province of the 
Anglo-Egyptian Sudau I saw a great deal of this little- 
known Lark, and venture to offer some obser vations on it. 
The Red-tailed Bush-Lark is quite a common bird along 
the Pongo River, on open patches in the forest-country 
between the Pongo and Chak Chak, on the plains along the 
Chell River, and on the grassy “‘ khors”? which intersect the 
forest between Chak Chak and Dem Zubeir. 
I brought back the following specimens :— 
a. g (breeding). 3.2.07. 20 miles E. of the Pongo. 
b. & (apparently breeding). 5.2.0.7. Pongo River. 
c. g (not breeding). 5.2.07. Pongo River. 
d. & a BEAU 43 4) 
e. 6 i Dele ne A 
I first met with the species on February 2nd, 1907, while 
on the march between Kuanga’s village and the Pongo, 
when my attention was attracted by a dark-coloured Lark- 
like bird which rose from the top of one of the trees 
scattered over the plain, soared singing into the air for 
forty or fifty yards, and after a minute or two descended 
again to the perch from which it star ted. 
Through glasses I watched it repeat this performance 
* Alauda erythropygia Strickl, ; Sharpe, Cat. B. xiii. p. 619. 
