Census location

Year

Season census done

Chi-square goodness of fit value

Conclusion

Wet season

Dry season

Amboseli

2010

876

630

Χ2 = 40.18, df = 1, p < 0.001

For 2010, wet season number was higher than dry season number.

2013

910

488

Χ2 = 127.39, df = 1, p < 0.001

For 2013, wet season number was higher than dry season number.

Chi-square value

Χ2 = 0.65, df = 1, p = 0.42

Χ2 = 18.04, df = 1, p < 0.001

For the set of wet season, ostrich numbers were similar. However, for the set of dry season, ostrich numbers in 2010 was higher than for 2013 (i.e. number had declined with time in the dry season).

Magadi

2010

335

130

Χ2 = 90.38, df = 1, p < 0.001

For 2010, wet season number was higher than dry season number

2013

348

231

Χ2 = 23.64, df = 1, p < 0.001

For 2013, wet season number was higher than dry season number

Chi-square value

Χ2 = 0.25, df = 1, p = 0.62

Χ2 = 28.26, df = 1, p < 0.001

For the set of wet season, ostrich numbers were similar (with only a slightly but insignificantly more in 2013). However, for the set of dry season, ostrich numbers in 2013 was higher than for 2010 (i.e. number had increased with time in the dry season).

West Kilimanjaro

2010

61

68

Χ2 = 0.38. df = 1, p = 0.54

For 2010, wet season ostrich number and dry season number was similar (with a slightly more but insignificant number in the dry season).

2013

139

74

Χ2 = 19.84, df = 1, p < 0.001

For 2013, wet season ostrich number was higher than dry season number.

Chi-square value

Χ2 = 30.42, df = 1, p < 0.001

Χ2 = 0.25, df = 1, p = 0.62

For the set of wet season, ostrich number in 2013 was higher than 2010 (i.e. ostrich number was increasing with time). However, for the set of dry season, ostrich number was similar (with slight insignificant increase in 2013).

Natron

2010

189

314

Χ2 = 31.05, df = 1, p < 0.001

For 2010, dry season numbers were higher than wet season number

2013

523

297

Χ2 = 62.29, df = 1, p < 0.001

For 2013, wet season numbers were higher than dry season numbers

Chi-square value

Χ2 =156.68, df = 1, p < 0.001

Χ2 = 0.47 df = 1, p = 0.49

For the set of wet, ostrich numbers for 2013 was higher than for 2010 (i.e. number of ostrich was increasing with time). However, for the set of dry season, ostrich numbers were similar (with a slight but insignificant decline in ostrich numbers from 2010 to 2013).