The White-eared Night Heron (Gorsachius magnificus) is a Class II protected species in China. It is difficult to observe in the field and its population is small. The present study reports a new distribution site in N...The White-eared Night Heron (Gorsachius magnificus) is a Class II protected species in China. It is difficult to observe in the field and its population is small. The present study reports a new distribution site in Nanxiong County, in northern Guangdong Province, where observations of an active nest were made from 4 May to 14 July 2012, the first time consecutive observations have been made for a period of more than two months. The adults flew away from the nest at night, with a peak at 19:00-20:00 and returned in the mornings with a peak at 04:30-05:30. The peak time for feeding young was at 05:00-05:30, accounting for 26.5%of total feeding activities. No feeding occurred from 10:00 to 16:00. The results of our study of its behavior explain why the White-eared Night Heron is usually observed in the evening just before dark, or in the morning before sunrise, at least during the breeding season. There were about 67 days from hatching to fledging, longer than the fledging time of most heron species. This study is the first to cover the entire period of parental care and fills a gap in previous knowledge.展开更多
Once,in 2007,the authors had written:regarding to the endangerment of the White-eared Night Heron (Gorsachius magnificus),it would be evidentially to say that no longer the status of the bird is to meet the Criteria E...Once,in 2007,the authors had written:regarding to the endangerment of the White-eared Night Heron (Gorsachius magnificus),it would be evidentially to say that no longer the status of the bird is to meet the Criteria EN C1 but more likely still marginally meet EN C2a(i),and hence the bird might be currently remained amongst those Endangered (EN),with caveats that,if any bird could have been found in an area outside the range of any known subpopulation,it will then warrant a lower threat status.Now,it is time for due consideration.展开更多
The food habits of three nestling herons in Zipeng Mountains, Feixi County, Anhui Province from April to July in 1996 were reported in the paper. Based on food habits, food diversity and similarity were compared. The ...The food habits of three nestling herons in Zipeng Mountains, Feixi County, Anhui Province from April to July in 1996 were reported in the paper. Based on food habits, food diversity and similarity were compared. The nestlings of Chinese pond heron were fed with fish and insects, those of little egret were given with fish and shrimps, however, those of black-crowned night heron were brought up with fish and amphibians. Of the diets of the three species, nestling Chinese posnd heron had the widest one, nestling black-crowned night heron had the narrowest one. Nestling Chinese pond heron had the highest preference to insects, but nestling little egret and nestling black-crowned night heron had the highest preference to fish. Similarity of food between nestling little egret and nestling black-crowned night heron was the highest, but was the lowest between Chinese pond heron and black-crowned night heron. Study on the food habits was important for us to manage herons and preserve biodiversity.展开更多
基金funded by the National Nature Science Foundation of China(Grant No.31172067)the National Nature Science Foundation of China-Guang dong Joint Fund(U0833005)Guangdong Plan Projects(2010B060200034,2011B031100004)
文摘The White-eared Night Heron (Gorsachius magnificus) is a Class II protected species in China. It is difficult to observe in the field and its population is small. The present study reports a new distribution site in Nanxiong County, in northern Guangdong Province, where observations of an active nest were made from 4 May to 14 July 2012, the first time consecutive observations have been made for a period of more than two months. The adults flew away from the nest at night, with a peak at 19:00-20:00 and returned in the mornings with a peak at 04:30-05:30. The peak time for feeding young was at 05:00-05:30, accounting for 26.5%of total feeding activities. No feeding occurred from 10:00 to 16:00. The results of our study of its behavior explain why the White-eared Night Heron is usually observed in the evening just before dark, or in the morning before sunrise, at least during the breeding season. There were about 67 days from hatching to fledging, longer than the fledging time of most heron species. This study is the first to cover the entire period of parental care and fills a gap in previous knowledge.
基金Zoologische Gesellschaft für Arten und Populationsschutz e. V. (ZGAP) in Germanythe Royal Society for the Protection of Birds (RSPB) in the United Kingdom
文摘Once,in 2007,the authors had written:regarding to the endangerment of the White-eared Night Heron (Gorsachius magnificus),it would be evidentially to say that no longer the status of the bird is to meet the Criteria EN C1 but more likely still marginally meet EN C2a(i),and hence the bird might be currently remained amongst those Endangered (EN),with caveats that,if any bird could have been found in an area outside the range of any known subpopulation,it will then warrant a lower threat status.Now,it is time for due consideration.
文摘The food habits of three nestling herons in Zipeng Mountains, Feixi County, Anhui Province from April to July in 1996 were reported in the paper. Based on food habits, food diversity and similarity were compared. The nestlings of Chinese pond heron were fed with fish and insects, those of little egret were given with fish and shrimps, however, those of black-crowned night heron were brought up with fish and amphibians. Of the diets of the three species, nestling Chinese posnd heron had the widest one, nestling black-crowned night heron had the narrowest one. Nestling Chinese pond heron had the highest preference to insects, but nestling little egret and nestling black-crowned night heron had the highest preference to fish. Similarity of food between nestling little egret and nestling black-crowned night heron was the highest, but was the lowest between Chinese pond heron and black-crowned night heron. Study on the food habits was important for us to manage herons and preserve biodiversity.
