J.P. Myers # 1974 Trying to subdivide (16,22) Estancia Medaland, 35 km S. of Tandil by road, Pto de Madariaga, Pcia de Bs. As., Argentina 8 November (cm/1) of semi-terra? Minimum of 25 buffle in the vicinity - perhaps as many as 15 ten.birds maybe more. It is often difficult to assess the effect of our presence on them, as they seem to be so sensitive to disturbance and unwillingly willing to coalesce, even from territories. (13,21) Estancia Medaland, Pto de Madariaga, Pcia de Bs. As., Argentina 9 November. try again - another % Traffic calculation (see 7 Nov.). 0530 at grid 19 in 13,21 overlooking an expanse of shortgrass buffalo habitat. Buffles flying around shortly after I arrived, perhaps before. 0538 5 buffles landed, and appeared to have flown in from far E. 2 more 30 sec later. three beside landed in (2,2) began foraging in directed flock. 0655 they've been foraging continuously in a directed fashion. 6 of them have reached (2,0) - just flew 15 m. In this flock it does not appear that an individual falls behind then rushes to catch up (something I've never seen emphatically in buffalo - rather there is concerted + steady progress in one direction, some alternation in which bird is leading, (not merely a uniform front). There are other buffles on the grid but so far no suppliants. 0600 - they flew no goshus calling or any other obvious suggestion of a spook. Landed immediately (20 sec) 0608. 1st suppliant. 0635 more suppliant, right in front of the car (2,0/3,0) 0610 - curious -! a buffalo had fooled me for a minute because of its foraging behaviour. The flight was good only for seeing its silhouetted shape. It moved like a small plane - instead of the discontinuous and variable walking rate with a variable number of steps between pauses, this bird took 3-4 steps and paused - like a Chonardius. 0647 everyone flew again when a Varellos began calling. 40 sec later coming in again. Landed. 0648 flew again but 20 sec later landed. made it difficult to keep track. But it's obvious that I'm not the one causing the spooking. NOTE - in the % TB calculation notebook I have been recording site, time, and type of space-specific appearance. Up to now (0655) they've all been chance and supplantations, both head-up running and helicopter flight. Just now (10 on gird map) a 'side-run supplant' occurred: intruder suppliante