90 
THE WILSON JOURNAL OF ORNITHOLOGY • Vol. 124. No. 1. March 2012 
Spring 
Fall/winter 
w so*co n<r» 
Summer 
_ 
Hi Primary fores. □ Cornfield Human occupation ^Rock 
Pasture I I Grassland Bushes 
, F1G ; . territories and liume ranges of Plush-creslcd Jays during spring, summer, and fall/winter at three study sites in 
the Atlantic Forest, southern Brazil. VVP (Vila Velha State Park). KEP (Klabin Ecological Park), and RTF (Ribeirao do 
Tigre Farm). 
in diameter. Nests measured 151 ± 31.27 mm in 
height and 295.4 ± 24.33 mm in diameter. The 
brood chamber measured 162 ± 12.07 mm in 
internal diameter and 99.4 ± 13.88 mm in depth 
(Table 2). 
The eggs (3.4 ± 0.80 eggs/nest) were spotted or 
blotched with dark brown concentrated on the 
rhombic pole and less scattered in the center on a 
cream-colored background (Fig. 3). Three, four, 
and two nestlings were recorded in the three non- 
depredated nests. The newly hatched chicks had 
red-orange skin, and were almost black around the 
eyes, wings, and spine. The bill was completely 
yellow, especially the mandible. Measurements at 
nestlings (n = 9) 2 weeks post-hatching were 11' 
± 12.47 g. tarsus = 37.9 ± 1.46 mm. oilmen - 
18.4 ± 1.53 mm. nostrils = 11.9 r 0.99 mm. and 
wing length = 90.8 ±10.90 mm (Table 3). 
Plush-crcsted Jays are cooperative breeders 
with auxiliaries at the nest (helpers). The incuba¬ 
tion period was between 18 and 20 days. In¬ 
dividuals took turns in the nest during incubation 
,izJd BLE ; , P '“ sh - crestcd Ja y nes > measurements (mm) in the Atlantic Forest, southern Brazil: Klabin Ecological Park 
(KEP) and Vila Velha State Park (VVP). 
Nesi U 
Nest height 
Nest diameter 
1 KEP 
2 VVP 
3 VVP 
4 KEP 
5 KEP 
Mean ± SD 
Brood chamber height 
Brood chamber diaroMW 
152 
180 
190 
125 
108 
152 ± 31.27 
287 
282 
275 
290 
343 
295.4 ± 24.33 
99 
120 
108 
90 
80 
99.4 ± 13.88 
180 
170 
162 
150 
148 
162 ± 12.07 
