Predicting effects of water management on breeding abundance of three wading bird species

2022 ◽  
Author(s):  
David A. Essian ◽  
Rajendra Paudel ◽  
Dale E. Gawlik
Keyword(s):  
Water Management ◽  
Bird Species ◽  
Wading Bird

Flock formation and the role of plumage colouration in Ardeidae

2005 ◽  
Vol 83 (5) ◽  
pp. 683-693 ◽  
Author(s):  
M Clay Green ◽  
Paul L Leberg
Keyword(s):  
Bird Species ◽  
Flock Size ◽  
Wading Birds ◽  
Plumage Colouration ◽  
Wading Bird ◽  
White Plumage ◽  
Fourth Experiment ◽  
Species Specific ◽  
Colour Morphs ◽  
Egretta Rufescens

It has been hypothesized that white plumage facilitates flock formation in Ardeidae. We conducted four experiments using decoys to test factors involved in attracting wading birds to a specific pond. The first three experiments tested the effects of plumage colouration, flock size, and species-specific decoys on flock formation. The fourth experiment examined intraspecific differences in flock choice between the two colour morphs of the reddish egret, Egretta rufescens (Gmelin, 1789). Wading birds landed at flocks of decoys more often than single or no decoys (P < 0.001) but exhibited no overall attraction to white plumage (P > 0.05). White-plumaged species were attracted to white decoys (P < 0.001) and dark-plumaged species were attracted to dark decoys (P < 0.001). Snowy egrets (E. thula (Molina, 1782)), great egrets (Ardea alba L., 1758), and little blue herons (E. caerulea (L., 1758)) landed more often at ponds that contained decoys resembling conspecifics. At the intraspecific level, all observed reddish egrets selected flocks with like-plumaged decoys. Our results suggest that plumage colouration is an attractant for species with similar plumage, but white plumage is not an attractant for all wading bird species. White plumage may facilitate flock formation in certain species but does not serve as a universal attractant for wading birds of varying plumage colouration and size.

scholarly journals Analisis Fungsi dan Manajemen Kawasan Konservasi Darmaloka

2018 ◽  
Vol 2 (1) ◽  
pp. 183
Author(s):  
Andri Kurniawan
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Data Analysis ◽  
Water Discharge ◽  
Bird Species ◽  
Water System ◽  
Conservation Areas ◽  
Conservation Area ◽  
The Stability ◽  
Supporting Materials

One effort to maintain forest fungtions from futher damage is to establish and maintain conservation areas, both micro dan macro. Darmaloka conservation area in Kuningan Regency is a micro conservation area to keep preserve by functioning and managing the area. This study aimed to : (1) studying the function of Darmaloka conservation area seen from the diversity of vegetation, wildlife and water management, (2) assessing the running Darmaloka conservation area management. The study was conducted in Darmaloka corsevation area, from July to October 2010. Materials and equipment used were sketch of the area location, measuring tools, calculators, stationery, and ather supporting materials and tools. Data were collected by direct observation such as vegetation, bird, fish and water system, as well as interviews. Method of data analysis applied analysis vegetation, inventory of bird, fish density and the dischage and water quality. The results showed, there were seven types in Darmaloka conservation area, but none of them were seedlings, saplings and poles. Species Binuang (Octomeles sumatrana) dominated Darmaloka conservation areas, and the stability classified as moderate. In this area, there were 5 (five) bird species categorized rare (endangered) to medium, sacred white-Kancra fish with 5 fisher/m2 in density, catfish, and quite a lot Beunteur fish. Water discharge was about 2,94 l/sec, and the quality was good (netral). Viewed from tradition, this region well managed and controlled, but viewed from modern management, this region not regarding properly yet. It could be seen from the absence of a clear plan regarding the management of the area. The management organization was also very simple and there werenot basic clear tasks and functions amongts organization units yet.

Nestling Diet of Three Sympatrically Nesting Wading Bird Species in the Florida Everglades

Waterbirds ◽  
2012 ◽  
Vol 35 (1) ◽  
pp. 154-159 ◽  
Author(s):  
Robin A. Boyle ◽  
Nathan J. Dorn ◽  
Mark I. Cook
Keyword(s):  
Bird Species ◽  
Florida Everglades ◽  
Wading Bird ◽  
Nestling Diet

scholarly journals Protected wading bird species threaten relict centenarian cork oaks in a Mediterranean Biosphere Reserve: A conservation management conflict

2011 ◽  
Vol 144 (2) ◽  
pp. 764-771 ◽  
Author(s):  
Luis V. García ◽  
Cristina Ramo ◽  
Cristina Aponte ◽  
Adela Moreno ◽  
María T. Domínguez ◽  
...  
Keyword(s):  
Conservation Management ◽  
Bird Species ◽  
Biosphere Reserve ◽  
Wading Bird

Dynamic habitat selection by two wading bird species with divergent foraging strategies in a seasonally fluctuating wetland

The Auk ◽  
2011 ◽  
Vol 128 (4) ◽  
pp. 651-662 ◽  
Author(s):  
James M. Beerens ◽  
Dale E. Gawlik ◽  
Garth Herring ◽  
Mark I. Cook
Keyword(s):  
Habitat Selection ◽  
Bird Species ◽  
Foraging Strategies ◽  
Wading Bird ◽  
Dynamic Habitat

Behavioral, Morphological and Physiological Correlates of Diurnal and Nocturnal Vision in Selected Wading Bird Species

1999 ◽  
Vol 53 (5-6) ◽  
pp. 227-242 ◽  
Author(s):  
L.M. Rojas ◽  
R. McNeil ◽  
T. Cabana ◽  
P. Lachapelle
Keyword(s):  
Bird Species ◽  
Wading Bird ◽  
Nocturnal Vision

scholarly journals Variaciones alométricas durante el crecimiento en siete especies de garzas (Aves: Ardeidae)

2017 ◽  
Vol 65 (4) ◽  
pp. 1347 ◽  
Author(s):  
Dennis Denis
Keyword(s):  
Common Ancestor ◽  
Bird Species ◽  
Growth Period ◽  
Body Growth ◽  
Point Of View ◽  
Differential Growth ◽  
Wading Bird ◽  
Body Shapes ◽  
Maximum Expression ◽  
Morphology Pattern

The order Ciconiiformes include wading bird species of sizes from medium to high, with body growth dynamic that can be analyzed to enlighten micro evolutionary trends. Egrets and herons (family Ardeidae) evolved from a common ancestor, but there are differences in adult body shapes, and their evolution has been suggested to be based on heterochronic processes. However, previous researches on growth have focused only in lineal dimension, and alometric changes have not been studied. In the current paper I described changes in body proportions during growth in seven ardeid species, and analyzed body growth under a phylogenetic point of view, to identify the primitive morphology pattern among genus Butorides and Nycticorax. For this purpose, I calculated bill/tarsus rate in 353 nestlings, measured between 1998 and 2006, and assessed their changes with age and body weight. All species showed marked differences in proportion changes extension between hatching and an analogous growth moment, except Bubulcus that grows almost isometrically. Alometric changes during growth and at hatch, generate a differential growth that produced the different adult morphologies expressed among egrets and herons. The general trends were toward a slight increase in the middle of the growth period up to a lowering to almost the same initial proportions. Growth in the first life stages tends to be more isometric and differences get higher latter in growth. The hypothesis of Nycticorax as peramorphic morfotype is more parsimonious with changes trends in the group, resulting in a relative extremities extension with positive alometry in bill and tarsus in all species. This hypothesis is consistent with a gradual hipermorphosis that reaches a maximum expression in Ardea.

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