Guilherme and Borges • BIRDS OF THE UPPER JURUA RIVER, ACRE, BRAZIL 
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firme forest. The survey of the bird fauna occurred 
between 22 and 31 January 2007. Edge habitats 
bordering the surrounding varzea and terra firme 
forests were also sampled. A base camp was 
established at the Colonia Dois Portos community 
on the bank of the Cruzeiro do Vale stream, 
~2 km from the campina enclave. The commu¬ 
nity was inhabited by 20 people in four families. 
The area surrounding the base camp included a 
small pasture for cattle and a tract of secondary 
forest (regenerating from subsistence agriculture), 
where additional observations of birds were 
conducted. 
Species Inventory. —The local bird fauna was 
inventoried using two procedures: (1) quantitative 
sampling through captures with 20, 12 X 2-m mist 
nets (36 mm mesh), and (2) collection of 
complementary records based on field observa¬ 
tions with 8 X 42 binoculars and recordings of 
vocalizations using a Sony TCM 5,000 recorder. 
Mist nets were set in linear transects of 10 nets 
each within the campina and campinarana, and in 
the adjacent forest edge. Nets were set at dawn 
(0530 hrs) and remained open until 1500 hrs to 
maximize the number of specimens captured. 
Voucher specimens were collected for laboratory 
analysis. All specimens were prepared using 
standard taxidermy techniques and deposited in 
the Ornithology Laboratory of the Goeldi Muse¬ 
um (Museu Paraense Emilio Goeldi-MPEG) in 
Belem. Specimen collection was authorized by 
the Brazilian Environment Institute (IBAMA), 
through license number 044/2006-COFAN. Sci¬ 
entific nomenclature followed that recommended 
by the IOC (Gill and Donsker 2010). 
RESULTS AND DISCUSSION 
The 10 days of data collection resulted in 1,425 
net/hrs of captures using mist nets, and 8 hrs of 
recordings resulting in identification of 114 
species of birds (Table 1). Six (4.4%) are known 
to be associated with campinas and campinaranas 
of the western Amazon (Stotz et al. 1996, Alonso 
2002). Only two, Zimmer’s Tody-Tyrant ( Hemi- 
triccus minimus ) and Black Manakin (Xenopipo 
atronitens) are included in Stotz et al.’s (1996) list 
of birds associated with the white-sand habitats of 
the southern Amazon Basin. We also report 
important records of species endemic to south¬ 
western Amazonia but which are little known in 
Brazil (Guilherme and Borges 2008). 
Brown-banded Puffbird ( Notharchus ordii). 
This species is often associated with habitats on 
white sandy soils in northeastern Peru (Alonso 
