![]() ![]() Egretta thula confirmed the hypothesis of the tendency to the social foraging when there is higher availability of high-quality foraging habitats. The passive foraging techniques used by the species may not be profitable if it feeds in aggregations, where the birds agitation provokes great prey movement. Ardea alba was a solitary forager in most of the cases and there was not clear seasonal variation in this behavior. For each observed individual was registered if it was foraging solitarily or in aggregations. were conducted at 20, by foot or by boat. The seasonal variation of foraging sociability of Great White Egret (Ardea alba) and Snowy Egret (Egretta thula) on the lagoons of the upper Paraná river floodplain, Brazil, was analyzed. Seasonal variation in the foraging sociability of Great White Egret (Ardea alba) and Snowy Egret (Egretta thula) (Aves: Ciconiiformes) in the upper Paraná river floodplain, Brazil. Our study was the first application of the Marine IBA Methodology in Black Sea. Results, we have updated the borders of the Black Sea Marine IBA's, according to guidelines in the Inventory indicates that the number and distribution of the colonies has shifted to west with a decline in Sinop and Sile, followed by recent colonisations in Haydarpasa and Kiyikoy. Comparison of our results with the earlier IBA With 88 and Sile Islets with 53 breeding pairs. The colonies with the highest number of pairs were in theĬoastline from Eregli to Zonguldak with 152 pairs, followed by Strait of Istanbul (so called Bosporus) ![]() Mediterranean shag is almost continuous along Turkish Black Sea coasts with absence at the shoresĬovering sand or pebble beaches. Kiyiköy in Thrace extending to Hopa at the Georgian Border. Theīreeding range of Mediterranean shags are wide, covering a large coastal stretch beginning from 47 possible breedingĬlusters (colony sites) were identified and breeding was confirmed in 45 out of 47 colony sites. The number of occupied nests, the number of chicks and the juveniles were recorded.Įach colony site was surveyed at least twice during the breeding season. We have conducted colony counts along the coasts by boatsīetween December 2012 and May 2013 in order to determine the occurrence and assess the size of Strong preference for cliffs, sea-caves and rocky islets with adjacent deep, clear water. It occupies marine habitats but does not usually occur far from land. The European Shag (Phalacrocorax aristotelis) which is endemic to the Mediterranean Basin andīlack Sea. The Mediterranean Shag (Phalacrocorax aristotelis desmarestii) is the Mediterranean subspecies of ![]()
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