Harvey et at. • AVIFAUNA OF THE GRAN PAJONAL AND SIRA 
293 
Trochilidae (24 species), Fumariidae (26 species), 
Thamnophilidae (26 species). Tyrannidae (38 
species), and Thraupidae (40 species) contributed 
most to species richness. Habitats at higher 
elevations were less diverse than those at lower 
elevations with elfin forest (35 species) and 
paramo grassland (5 species) having the lowest 
diversity. The stunted forest on fine white 
substrate was also depauperate with only Gold¬ 
en-olive Woodpecker (Colaptes rubiginosns ), 
Rufous-vented Tapaculo (Scytalopus femoralis), 
and occasional canopy flocks. 
Status —We recorded 12 presumed Boreal and 
15 presumed Austral migrant bird species during 
the inventory (Appendix), which straddled the 
time period of arrival of Boreal migrants and 
departure of Austral migrants. Two migrant 
species. Black-and-white Tanager (Conothraupis 
i peculigera) and Black-and-white Seedeatcr 
\Sporophila luctuosa). do not fit into either the 
Boreal or Austral migrant category, and Red-eyed 
Vireo (Vireo olivaceus) was likely represented by 
migrants from both the north and south. Addi¬ 
tional work in the region at other seasons is 
needed to confirm the migratory status of some 
species. Nesting activity in the form of an active 
nest or dependent young was documented only for 
Blue-fronted Laneebill (Doryfera johitnnae). 
Swallow-winged Puffbird (Chclidoptcru teneb- 
rosa). Golden-olive Woodpecker. Slaty-capped 
flycatcher (Leptopogon superciliaris). Social 
flycatcher (Myiozetetes similis). Great Kiskadee 
t Pitangus sulphuratus), Spotted Nightingale- 
Thrush (Catharus dryas), and Wedge-tailed Grass 
finch (Emberizoides herbicola). We noted breed¬ 
ing condition (brood patch or cloaca! protuber- 
an ce> among an additional 15 species captured in 
m ' s| nets (Appendix). Two mist-netted Large 
Elaenia (Elaenia speclabilis). almost certainly a 
migrant in the region, and a Mouse-colored 
Tyrannulet (Phaeomyias marina) had old brood 
patches. Representatives of 27 of the 89 species 
captured in mist nets were actively molting 
•Appendix). 
__ Species Accounts .—We obtained new data lor 
s pecies previously unknown from the region, 
extremely local distribution, or of uncertain 
•axonomic status. 
Brown Tinamou (Crypturellus obsoletus ).— 
This species was detected in forested habitats at 
^en of eight study sites, including Monte Tabor 
at, d the upper Shaani Valley, where it was fairly 
common to common. Birds from south of the 
Unine River generally occurred at lower eleva¬ 
tions and gave songs and calls (ML 138701. 
140407, 140428. 140429) that differed from songs 
and calls given by birds north of the Unine River 
(ML 138807. 138862, 140539, 140546, 140582). 
Additional work on morphological and vocal 
variation is needed to clarify the taxonomic status 
of populations here and elsewhere in the range of 
this widespread species. 
Northern/Soulhern Caraeara (Carocara spp.).— 
We observed this species near the air strip in 
Ovcnteni on 13 September 2008. The caraeara 
was seen well from below, but the brevity of this 
observation precluded specific identification. 
There have been scattered sight records of 
Southern Caraeara (C. plancus) in the Peruvian 
Amazon, the northernmost at the Rio Cushabatay 
in Loreto (B. P. Walker, unpubl. data), and 
Yanuchaga-Chemillen National Park in Pasco (J. 
.1. Chaleo and Thomas Arndt, unpubl. data). This 
constitutes the first record of the genus Caraeara 
for Ucayali. 
Russet-crowned Crake (Laterallus viridis ).— 
This species was fairly common in tall grass 
savanna at Monte Tabor and in shrub-dominated 
savanna around Oventeni. where we collected a 
single male. Individuals were most often detected 
when a pair uttered a descending duet from dense 
vegetation, often counter-singing with pairs on 
adjacent territories. This species is patchily 
distributed in Peril with the nearest records from 
the Apurimac and Chanchamayo valleys (Tacza- 
nowski 1886, Bond 1955; pens. obs.). These 
constitute the first records for Ucayali. 
Picui Ground-Dove (Columbina picui ).—One 
individual was observed and photographed on 13 
September 2008 in dense, recently burned shrub- 
dominated savanna in Oventeni. This austral 
migrant is known in Peru largely from the Madre 
dc Dios drainage in the southern Amazon, and the 
only prior records in Ucayali are from Yarina- 
eocha (Pearson 1975) and Balia (O'Neill 1969). 
Spot-tailed Nightjar (Caprimulgm maculicau- 
dus ).'—This species was fairly common in recent¬ 
ly burned savanna mid pasture at Oventeni. Both 
photographs and audio recordings w‘ere obtained. 
Patchily distributed in Peru, this species is known 
from savanna and dry inter-Andean valleys, the 
nearest records being 400 km to the north in the 
Mayo Valley (Begazo et al. 2001). These 
constitute the first records for Ucayali. 
New barbet form (Capita taxon novum).—A 
form of Capito barbet allied to Scarlet-banded 
