Category: Columbiformes

The census and distribution of winteringwoodpigeons Columba palumbus in theIberian peninsula

Wood-Pigeon (Columba palumbus) Science Article 1 abstract Throughout the 1997-1998, 1998-1999 and 1999-2000 seasons, Woodpigeon population censuseswere carried out in their traditional Iberian wintering area, which comprises the southwesternquadrant of the Peninsula. The method applied was the direct counting of flocks incommunal roosts, of which 210 have been checked so far. Four counts were carried […]

Nonlinear phenomena and song evolution in Streptopelia doves

Turtle-Dove (Streptopelia turtur) Science Article 1 abstract The production of complex bird song is commonly achieved through neuromuscular activity of respiratory,syringeal and craniomandibular systems. According to nonlinear dynamics theory, however, complexity can also emergespontaneously from very simple and deterministic systems, without any external control. Thus far, studies linking bird songcomplexity with nonlinear dynamics are very […]

REPRODUCTIVE ECOLOGY OF THE RUDDY GROUND-DOVE ON THE CENTRAL PLATEAU OF BRAZIL

Ruddy Ground-Dove (Columbina talpacoti) Science Article 1 abstract The reproductive ecology of the Ruddy Ground-Dove (Columbina talpacoti)was studied between January 1982 and February 1983 in the Cerrado of the Central Plateauof Brazil. A total of 2 18 nests were found in 19 plant species, at heights ranging from groundlevel to 7.5 m. Nest construction was […]

SPATIAL AND TEMPORAL ABUNDANCE PATTERNS OF RUDDY QUAIL-DOVES (GEOTRYGON MOKWVi4) NEAR MANAUS, BRAZIL

Ruddy Quail-Dove (Geotrygon montana) Science Article 1 abstract We analyzed patterns of abundance of Ruddy Quail-Doves (Geotrygon montana)base on 12 years of mist-net data (457 captures) from terrajirme forest near Manausin central Amazonian Brazil. Unlike most understory birds at the study site, G. montanavaried greatly in abundance. Quail-doves disappeared for months and then reappeared,usually during […]

In vivo pectoralis muscle force-length behavior during level flight in pigeons (Columba livia)

Rock Pigeon (Columba livia) Science Article 3 abstract For the first time, we report in vivo measurements of pectoralis muscle length change obtained using sonomicrometry combined with measurements of its force development via deltopectoral crest strain recordings of a bird in free flight. These measurements allow us to characterize the contractile behavior and mechanical power […]

Thermal control of metabolic cold defence in pigeons Columba livia

Rock Pigeon (Columba livia) Science Article 1 abstract Metabolic rate (MR) and various body temperatures were recorded in pigeons Columba livia during gradual lowering of the ambient temperature (Ta) and during cold exposure (?10 deg C) for an entire circadian cycle. The aim was to study how changes in MR accorded with the observed body […]