Table 1.

Family group and clan affiliation, age of the matriarch in June 1993, number (no.) of calves per family group in June 1993, number (no.) of calves lost per family group during the drought (June 1993–February 1994) and percentage (%) of observation days (based on a 56 full-day monitoring) where the matriarch was seen in TNP for each of the 21 family groups considered. (Family group sizes include all adult females and all calves less than 8 years in age. For three family groups, not all family members were identified by June 1993: we have therefore provided in bracket the family size estimates for May 1994, when all members were identified.)

family group	clan	age matriarch 1993	no. calves per family June 1993	no. calves died	% days seen in the Park	no. adult females in June 1993	family size in June 1993
A	A	45	2	1	0	8	11
Cl	A	38	3	0	0	2 (6)	5 (11)
D	A	35	6	0	0	5	10
F	A	26	5	2	0	3	8
G	A	26	3	0	29	5	8
I	A	23	3	0	2	3	6
L	A	38	7	1	16	5	12
Na	A	26	3	0	0	1	4
Ol	A	26	2	0	2	1	3
Si	A	26	4	0	7	3 (6)	7 (11)
X	A	14	1	0	0	1	2
El	B	33	3	1	44	6	9
H	B	23	3	2	29	4	8
K	B	25	10	4	53	11	21
Ob	B	23	5	1	66	6	11
Ve	B	26	5	3	37	6	13
Y	B	20	1	0	16	2	3
Be	C	18	1	0	0	1	2
C	C	33	7	0	4	9	16
S	C	33	5	1	0	6	11
W	C	38	2	0	0	1 (4)	3 (9)