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1 August 2001 ATTENUATED OUTER PRIMARIES IN PIGEONS AND DOVES: A COMPARATIVE TEST FAILS TO SUPPORT THE FLIGHT PERFORMANCE HYPOTHESIS
Bettina Mahler, Pablo Luis Tubaro
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Abstract

Sharp reduction of the inner web of the outer primary feather, hereafter referred to as the attenuated primary, is present in 54 of about 300 species belonging to the family Columbidae. The flight performance hypothesis (Goodwin 1983) suggests that attenuated primaries improve flight performance in cluttered habitats, presumably by enhancing maneuverability. This hypothesis predicts that the evolution of attenuated primaries should be associated with the use of closed habitats. A comparative analysis, using the contingent states test (Sillén-Tullberg 1993), was made to test this hypothesis. We found that 15 out of 17 independent instances of evolution of attenuated primaries occurred in clades using closed habitat, but because most species live in closed habitats, chance alone could explain this result.

Atenuación de las Primarias Externas en Palomas: Un Análisis Comparativo No Apoya la Hipótesis de la Performance de Vuelo

Resumen. En 54 de las aproximadamente 300 especies pertenecientes a la familia Columbidae se observa una abrupta reducción de la lámina interna de la pluma primaria distal, denominada primaria atenuada de aquí en adelante. La hipótesis de la performance de vuelo (Goodwin 1983) sugiere que las primarias atenuadas mejoran el desempeño de vuelo en ambientes cerrados, probablemente por conferir una mayor maniobrabilidad. Esta hipótesis predice que la evolución de primarias atenuadas debería estar asociada al uso de ambientes cerrados. Para evaluar esta hipótesis, se realizó un análisis comparativo usando el método de estados contingentes (Sillén-Tullberg 1993). Se encontró que 15 de 17 instancias independientes de evolución de primarias atenuadas ocurrieron en clados de ambientes cerrados, pero dado que la mayoría de las especies del grupo habitan estos ambientes, este resultado puede ser explicado simplemente por azar.

Bettina Mahler and Pablo Luis Tubaro "ATTENUATED OUTER PRIMARIES IN PIGEONS AND DOVES: A COMPARATIVE TEST FAILS TO SUPPORT THE FLIGHT PERFORMANCE HYPOTHESIS," The Condor 103(3), 449-454, (1 August 2001). https://doi.org/10.1650/0010-5422(2001)103[0449:AOPIPA]2.0.CO;2
Received: 20 April 2000; Accepted: 1 April 2001; Published: 1 August 2001
KEYWORDS
attenuated primary
Columbidae
doves
flight
flight performance hypothesis
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