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You searched for: Author "Baladrón, Alejandro V." Remove constraint Author: "Baladrón, Alejandro V." Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Habitat Selection by Burrowing Owls Athene cunicularia in the Pampas of Argentina: A Multiple-Scale Assessment

Author:
Baladrón Alejandro V.,   et al.   ; Isacch Juan P.; Cavalli Matilde; Bó María S.;     Show all 4 Authors
Source:
Acta ornithologica 2016 v.51 no.2 pp. 137-150
ISSN:
0001-6454
Subject:
Athene cunicularia; birds of prey; cropland; dunes; habitat preferences; habitats; indigenous species; land cover; land use; landscapes; linear models; nesting sites; probability; remote sensing; surveys; Argentina
Abstract:
... Human-induced habitat changes have been typically linked to negative effects on native species, but an increasing number of studies show that many species are unaffected by these changes or even benefited from them. The Burrowing Owl Athene cunicularia is a raptor species that has deserved special attention in recent years due to its capacity to live in a variety of natural and modified habitats. ...
DOI:
10.3161/00016454AO2016.51.2.001

2. Body Size and Sexual Dimorphism in the Southernmost Subspecies of the Burrowing Owl (Athene cunicularia cunicularia)

Author:
Baladrón Alejandro V.,   et al.   ; Cavalli Matilde; Isacch Juan P.; Bó María S.; Madrid Enrique;     Show all 5 Authors
Source:
Journal of raptor research 2015 v.49 no.4 pp. 479-485
ISSN:
0892-1016
Subject:
Athene cunicularia; arms (limbs); blood sampling; body size; claws; color; females; geographical variation; males; plumage; sex determination; sexual dimorphism; tail; Argentina; Caribbean; North America
Abstract:
... We studied body size and sexual dimorphism in the southernmost subspecies of the Burrowing Owl (Athene cunicularia cunicularia) at the Pampas of Argentina, and we compared our data with those from other subspecies in the Americas. A total of 58 individuals were captured and their coloration pattern (plumage and bare parts), body linear measurements (wing chord, standard tail length, tarsus length ...
DOI:
10.3356/rapt-49-04-479-485.1

3. Agonistic interactions in raptors of the Pampas region

Author:
Baladrón Alejandro V.,   et al.   ; Pretelli Matías G.;     Show all 2 Author
Source:
Wilson journal of ornithology 2013 v.125 no.3 pp. 650-655
ISSN:
1559-4491
Subject:
Circus; Vanellus chilensis; birds of prey; kleptoparasitism; Argentina; Pampas region
Abstract:
... In this study, we evaluated the interspecific agonistic responses of raptors and non-raptors, elicited by the presence of five raptor species (Circus cinereus, C. buffoni, Rupornis magnirostris, Elanus leucurus, and Geranoaetus melanoleucus) in the Pampas region of Argentina. We registered 62 agonistic interaction events, most of them involving two raptor species (58%). During these events we regi ...
DOI:
10.1676/12-183.1

4. Red-backed Hawks supply food to scavenging Chimango Caracaras

Author:
Baladrón, Alejandro V.,   et al.   ; Biondi, Laura M.; Bó, María S.; Malizia, Ana I.; Bechard, Marc J.;     Show all 5 Authors
Source:
Emu 2009 v.109 no.3 pp. 260-264
ISSN:
0158-4197
Subject:
Buteo; agonistic behavior; birds of prey; hawks
Abstract:
... Positive interactions between species of terrestrial vertebrates occur frequently and it is common among birds. However, such interactions have generally been overlooked in raptor field studies. We analysed interactions between Red-backed Hawks (Buteo polyosoma) and Chimango Caracaras (Milvago chimango) in order to determine the characteristics of the association between these two South American r ...
DOI:
10.1071/MU09024