Optimal diet strategy of a large-bodied psittacine: food resource abundance and nutritional content enable facultative dietary specialization by the Military Macaw

Table 1 Mean (± SD) per transect for estimators of food resource availability for Military Macaws in tropical deciduous and semi-deciduous forest at two sites along the coast of Jalisco in the dry season

Variable	Deciduous	Semi-deciduous	Significance value
Tree species fruiting	5.7 ± 1.7	5.5 ± 2.2	t₁₅ = 0.17, ns
Number of fruiting trees	9.3 ± 5.2	14.3 ± 6.8	t₁₅ = 1.65, ns
Sum of DBH of fruiting trees	259.3 ± 197.5	444.3 ± 136.3	t₁₅ = 2.26, p < 0.03
Sum of fruit abundance ranking	16.3 ± 6.4	20.0 ± 20.5	t₁₅ = 0.49, ns

Two-sample t test significance values are shown. No resources were recorded in pine-oak forest, therefore this habitat was excluded from analysis

ISSN: 2053-7166