Pale-breasted Spinetail (Synallaxis albescens) Science Article 1 abstract I recorded and analyzed vocalizations of Synallaxis albescens from three populations in Venezuela,two continental and one island, to assess the extent of geographic variation for a species of the familyFumariidae. Previous work on geographic variation in suboscines has focused on species of the Tyrannidae. Ialso tested the […]
LIMITED GEOGRAPHIC VARIATION IN THE VOCALIZATIONS OFA NEOTROPICAL FURNARIID, SYNALLAXIS ALBESCENS
Pale-breasted Spinetail (Synallaxis albescens) Science Article 1 abstract I recorded and analyzed vocalizations of Synallaxis albescens from three populations in Venezuela,two continental and one island, to assess the extent of geographic variation for a species of the familyFumariidae. Previous work on geographic variation in suboscines has focused on species of the Tyrannidae. Ialso tested the […]
The Paint-billed Crake Breeding in Costa Rica
Paint-billed Crake (Neocrex erythrops) Science Article 1 abstract We report a recent observation from southern Costa Rica of the Paint-billed Crake (Neocrex erythrops), a little known species from eastern and northern South America. An adult and recently hatched chick were observed at close range in wet grassy second-growth. This observation constitutes the first record of […]
The Paint-billed Crake Breeding in Costa Rica
Paint-billed Crake (Neocrex erythrops) Science Article 1 abstract We report a recent observation from southern Costa Rica of the Paint-billed Crake (Neocrex erythrops), a little known species from eastern and northern South America. An adult and recently hatched chick were observed at close range in wet grassy second-growth. This observation constitutes the first record of […]
First United States Record of Paint-billed Crake (Neocrex erythrops)
Paint-billed Crake (Neocrex erythrops) Science Article 2 abstract On 17 February 1972 Donald Baker, then an undergraduate in the Department of Wildlife and FisheriesSciences, Texas A&M University, caught a small rail in one of his traps for furbearers, along astream south of College Station, Brazos County, in east-central Texas. The bird was brought to me […]
First United States Record of Paint-billed Crake (Neocrex erythrops)
Paint-billed Crake (Neocrex erythrops) Science Article 2 abstract On 17 February 1972 Donald Baker, then an undergraduate in the Department of Wildlife and FisheriesSciences, Texas A&M University, caught a small rail in one of his traps for furbearers, along astream south of College Station, Brazos County, in east-central Texas. The bird was brought to me […]
Competitive abilities of oystercatchers (Haematopus ostralegus) occupying territories of different quality
Oystercatcher (Haematopus ostralegus) Science Article 2 abstract In territorial species, habitat heterogeneity results in some individuals occupying poor quality siteswhile others occupy high quality sites. Floaters (mature nonbreeders) may accept a low quality territory, because it is the best they can get and defend (
Competitive abilities of oystercatchers (Haematopus ostralegus) occupying territories of different quality
Oystercatcher (Haematopus ostralegus) Science Article 2 abstract In territorial species, habitat heterogeneity results in some individuals occupying poor quality siteswhile others occupy high quality sites. Floaters (mature nonbreeders) may accept a low quality territory, because it is the best they can get and defend (
Not all Oystercatchers Haematopus ostralegus select the most profitable common ockles Cerastoderma edule: a difference between feeding methods.
Oystercatcher (Haematopus ostralegus) Science Article 1 abstract We use an optimality model to describe prey choice by wintering Oystercatchers Haematopus ostralegus using different feeding methods . Birds fed on Common Cockles Cerastoderrrea edule, which they opened by either exclusively hammering or stabbing. The model includes probabilistic time costs associated with successful and unsuccessful prey handling, […]
Not all Oystercatchers Haematopus ostralegus select the most profitable common ockles Cerastoderma edule: a difference between feeding methods.
Oystercatcher (Haematopus ostralegus) Science Article 1 abstract We use an optimality model to describe prey choice by wintering Oystercatchers Haematopus ostralegus using different feeding methods . Birds fed on Common Cockles Cerastoderrrea edule, which they opened by either exclusively hammering or stabbing. The model includes probabilistic time costs associated with successful and unsuccessful prey handling, […]