With these assignments of degree of forest type specialization
in hand, we then compared community-level patterns of specialization
using two approaches. First, for a given forest type, we
aggregated species lists across all sites of that type, and calculated
the median specialization scores for this set of bird species. We did
this for each forest type, and assessed overall differences among
the forest types in degree of specialization using a Kruskal–Wallis
test (p = 0.05). We compared both median specialization scores
and average species richness across each of the three pairs of forest
types (i.e., semi-deciduous mixed, semi-deciduous dense and
dense mixed) using a Mann–Whitney U-test (p = 0.05).