We studied Thick-billed Parrot (Rhynchopsitta pachyrhyncha) nest-site density and social nesting behavior from 1998 to 2001 in Madera, Chihuahua, Mexico. The species formed high-density nesting clusters; 45 nesting attempts (30%) involved nesting pairs sharing nest trees, with a maximum of three nesting pairs per tree. The majority of nest trees were live or dead quaking aspens (Populus tremuloides). Clusters contained a mean of 11.5 breeding pairs (5 nests/ha). The highly social nesting behavior of Thick-billed Parrots may have important implications for management and conservation of their breeding habitat.
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1 June 2006
GREGARIOUS NESTING BEHAVIOR OF THICK-BILLED PARROTS (RHYNCHOPSITTA PACHYRHYNCHA) IN ASPEN STANDS
TIBERIO C. MONTERRUBIO-RICO,
JAVIER CRUZ-NIETO,
ERNESTO ENKERLIN-HOEFLICH,
DIANA VENEGAS-HOLGUIN,
LORENA TELLEZ-GARCIA,
CONSUELO MARIN-TOGO
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The Wilson Journal of Ornithology
Vol. 118 • No. 2
June 2006
Vol. 118 • No. 2
June 2006