van der Walel al. • AVIFAUNA IN AGROFORESTRY IN TABASCO. MEXICO 
565 
100 
P 
e 
r 
c 
e 
n 
t 
90 
80 
70 
60 
50 
40 
30 
20 
10 
0 
E3TI 
□ SI 
QR 
ONI 
□ FI 
HAQ 
□ AIF 
FIG. 2. Distribution of resident (A) and migrant (B) birds by foraging guilds in five agroforestry classes in Tabasco. 
Mexico. SC = scavenger; AF = arboreal frugivore; GR = granivore; B1 = bark-gleaning insectivore; FI - foliage- 
gleaning insectivore; AIF = arboreal insectivores/frugivores; T1 = terrestrial insectivore; SI - sallying/swecping 
insectivore; N1 = nectarivore/inseclivorc; O = omnivore; AQ = aquatic; P = piscivore; R = raptor, AA - animal 
agroforestry; AF = agroforest; LA - linear agrofnrestry; SA = sequential agroforcstry; CT - crops under tree cover. 
cover (Fig. 2). Animal agroforestry was different 
trom crops under tree cover, and the latter was 
different from sequential agroforestry (all P < 
0-05). SIMPER showed that differences between 
linear agroforestry and agroforests were due to 
higher abundance of terrestrial inseetivores, arbo¬ 
real insectivores/frugivores, and omnivores in 
agroforests. Differences between linear and se¬ 
quential agroforestry were mainly due to higher 
abundance of arboreal insectivores/frugivores in 
sequential agroforestry and of foliage-gleaning 
inseetivores in linear agroforestry. Foliage-gleaning 
inseetivores were more abundant in linear agroior- 
estry than in crops under tree cover, whereas bark- 
gleaning inseetivores and arboreal inseetivores/ 
frugivores were more abundant in the latter. 
Arboreal frugivores. terrestrial inseetivores, and 
sallying/sweeping inseetivores were more abundant 
in animal agroforestry than in crops under tree 
cover. Arboreal insectivores/frugivores were more 
abundant in sequential agroforestry than in crops 
under tree cover, whereas foliage-gleaning insecti- 
vores were more abundant in the latter. Large 
differences in bird distribution over guilds were 
