Results 21 to 30 of about 6,989 (171)

Time of day, water coverage, and pond type impact waterbird abundance in aquaculture ponds in Taiwan

open access: yesAvian Conservation and Ecology
The loss of coastal wetlands represents a grave threat to waterbirds, prompting the use of artificial wetlands, such as aquaculture ponds, as a means of conservation.
Shu-Yen Huang   +3 more
doaj   +1 more source

Yellow-crowned Night Herons Sighted in North Dakota [PDF]

open access: yes, 1977
Yellow-crowned night herons (Nyctanassa violacea) sighted at four locations in North Dakota during 1976 appear to be the first observations of this species for the State.
Green, Robert K.   +2 more
core   +3 more sources

Total Mercury in Heron and Egret Eggs and Excreta [PDF]

open access: yes, 1980
Author Institution: Ohio Cooperative Wildlife Research UnitComplete clutches of great blue heron (Ardea herodias), black-crowned night heron (Nycticorax nycticorax), and great egret (Casmerodius albus) eggs were collected along with excreta from nesting ...
Hoffman, Robert D.
core  

Population Trend of Colonially Nesting Heron Species in Greece

open access: yesBirds
Heron colonies are dynamic components of wetlands. Therefore, their systematic monitoring is important for the management of both birds and wetlands. During the period 1988–2018, we counted breeding pairs of seven colonial breeding heron species at 65 ...
Savas Kazantzidis   +6 more
doaj   +1 more source

Efectos del clima y el nivel del agua sobre la reproducción de aves acuáticas coloniales en Laguna Mar Chiquita - Bañados del Río Dulce (Argentina Central) [PDF]

open access: yes, 2010
En el presente trabajo se exploró la relación entre factores relacionados al clima y la reproducción de aves acuáticas coloniales en un extenso humedal del centro de Argentina, el sistema Laguna Mar Chiquita - Bañados del Río Dulce.
Dominino, Jael   +9 more
core  

An Assessment of Avian Populations Within the FAP 431 Project Area, Cook, Dupage, and Will Counties, Illinois [PDF]

open access: yes, 1989
Final Report, issued June, 1989Report issued on: June 1989INHS Technical Report prepared for Ilinois Department of Transportation, Bureau of Location and ...
Malmborg, Patti L., Vanderah, Glendy C.
core  

The Windy City Rookery: Movement and Activity Patterns of Black‐Crowned Night Herons (Nycticorax nycticorax) in a Human‐Dominated Landscape

open access: yesEcology and Evolution
As urbanization continues to accelerate, human‐dominated habitats are becoming increasingly important for wildlife as some species of conservation concern move into urban landscapes.
Sarah Slayton   +6 more
doaj   +1 more source

Color Photo Section [March 2011, pp. 39–42] [PDF]

open access: yes, 2011
Whimbrel, Red-headed Woodpecker, Northern Cardinal, atypical Ring-necked Pheasants (p. 39); Brown-headed Nuthatch, Ruby-throated Hummingbird, Ruby-crowned Kinglet, Palm Warbler (p.

core   +1 more source

An Unusual Type of Sibling Aggression in Black-Crowned Night Herons [PDF]

open access: yesThe Condor, 2000
AbstractSibling aggression varies with brood size, nestling age disparities, and food characteristics. We observed feeding and fighting within two broods of Black-crowned Night Herons (Nycticorax nycticorax) in Minnesota. In one nest, on two different days, a senior chick swallowed the head of its smallest sibling, immobilizing it until it seemed near ...
Medeiros, Matthew J.   +2 more
openaire   +1 more source

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