
 
		flock of long-tailed Wkydak. birds {Ohera progne), and found seeds and  
 insects in its stomach.  During Mr. Jameson’s  expedition it was met  
 with  at Kooroomoorooi  Pan,  and Mr.  Ayres writes :—“ These birds  
 are  exceedingly  local, for I have only  met with them at  the  present  
 spot-and on the Crocodile River close to its junction with the Marico.  
 The nest is placed high up in a large tree  and  is  composed  of  long  
 twigs and coarse grass and measures  about  three  feet  in  diameter.  
 It is  so roughly put together  that one  can  see  through it excepting  
 close to the  centre.  The  birds  roost  in  these  nests which are probably  
 used  year  after  year.  They  feed  upon  seeds,  berries,  and  
 insects.”  Mr. Andersson  gives  the  following  note:—“ This  large  
 finch-like bird  is rather common  in  Damara  Land  and  also  in  the  
 Lake  regions, where  it  is  known  to  the  natives  by  the  name  of  
 f Isaba  Gushoa.’  It  is  a  noisy  species,  gregarious  in  its  habits,  
 breeding in colonies, and constructing many nests in  the  same tree :  
 it seems to prefer the giraffe-acacia  for  the  purpose  of  nidification;  
 and it  is curious that when  these  birds  have  used  a  tree  for  this  
 purpose it usually withers  in  a  short  time after the building of  the  
 nest is completed;  but whether  birds  instinctively select such trees  
 as  have  a  tendency  to  decay, I  am unable  to  say.  The  collective  
 nests consist externally of  an immense mass of dry twigs and sticks,  
 in which are to be found  from  four  to  six separate nests or holes of  
 an oval  form, composed  of  grass  only, but  united  to each other by  
 intricate masses of  sticks,  defying the ingress of  any intruder except  
 a small  snake.  In  each  of  these  separate  holes  are  laid  three  or  
 four  eggs,  exactly  resembling  sparrows’  eggs, but  much larger.  I  
 obtained no  less  than  forty  of  these  eggs  (all  much  incubated)  on  
 January 29th, from two low trees standing close together, at Amatoni,  
 in latitude 18° south;  and on the following  day the birds were busy  
 in  repairing  one  of  the  collective  nests,  which  had  been  injured  
 during the collection of  the eggs which it contained.  I believe these  
 nests  are annually added  to ;  for,  so  far  as  I  have been able to see,  
 the  same  nest  is  retained  for  several  consecutive  seasons.  This  
 species is said  by Dr.  Smith to be a frequent attendant on the parasites  
 which infest the hide of that quadruped  :  I have never observed  
 this in Damara  Land,  which  may  be  owing  to  the  buffalo being a  
 scarce animal in that country.  The irides in this species are brown.”  
 The present species has also been found by Senor Anchieta, at Humbe  
 on the Ounene River and at Quillengues, Garnbos and Caconda. 
 PLOCEPASSER  MAH ALI. 
 General colour of  adult male  black;  the  first  half  of  each wing-  
 feather white;  bill  orange-red  or  coral-red;  legs  and  toes  orange  
 or  coral-red;  iris'  dark  hazel.  The  young  bird  has  some whitish  
 patches  on  the  neck  and  breast.  Length,  9   '  6  ';  wing,  5   ,   
 tail, 4". 
 Fig.  -Smith, 111. Zool.  S. Afr. pi.  64. 
 4 3 4 .   P l o c e p a s s e r   m a h a l i ,   Smith.  White-browed Weaver Bird. 
 P. mahali,  and P. pileatus, Layard, B.  S. Afr.  p.  187. 
 Sir A.  Smith discovered  this  species  to  the north  of  the  Orange  
 River,  where he found it congregating  in  large flocks,  and we  have  
 received  specimens  from  Kuruman,  and  also  from  Mr.  Ortlepp  at  
 Colesberg.  He writes::—“ Soon after crossing the  Orange  River at  
 Rhama they became plentiful.  Several flocks build in the same tree,  
 generally on one side only.  The nests  are  kidney-shaped, with two  
 entrances  from below, with a band of  grass between them on which  
 are laid the eggs-.-  The  grass  used  is  pretty thick  at  the  one end  
 which is  allowed  to  bristle  out,  as  the  weaving  can  only be done  
 with  the  ear  and  a  small  portion  of  the  stem.  I  noticed several  
 nests of  the common  Sparrow  (P.  arcuata) made of  the  same sort of  
 grass and presenting the same bristling appearance.  They are active  
 birds  constantly  on  the  move  from  tree  to  tree.  When  on  the  
 ground  they  utter  a  short  “ chick  chick,”  which  is  anything  but  
 pleasant  to  the  ear,  although  when  on  the  perch  their  note  is  
 changed into  a  short song something like that of  Orithagra selhyi.”  
 We have received  it from Mr.  T. C. Atmore, from Griqua Land, and  
 in  the  Transvaal,  writes  Mr.  Ay r e s t h e s e   birds  are  common  
 throughout  the bush,  but  are  not  seen  in  open  country;  they  are  
 gregarious,  and  have  a  chattering  note,  which  gives  the  idea  of  
 sociability.  Several  build  together  in  the  same  tree.  We  found  
 plenty of  old nests on  our  late  journey to the Limpopo;  they were  
 very rough structures, made up  of grass, with the long ends sticking  
 out in every  direction,  and formed like retorts, with  two  short necks  
 hanging down, and with so  small a flat surface inside for the eggs to  
 lie on, that I  cannot  understand  how  it  is  they  do  not  always roll  
 out  at  one  end or  the other,  especially as  the nest  is  built  or hung  
 on the outer twigs of the  spreading Mimosas, and is very liable to be  
 shaken  by  the  wind.”  Mr. T. E.  Buckley procured  it  in Matabele  
 Land,  and  at  Shashai,  and  Mr. Ayres  has  published a note  on  the