Nesting Colonies

Nesting Colonies

 

an aggregation of birds at a breeding site; an example of symbiosis, in which birds of one or several species nest close to one another.

Nesting colonies are characteristic of many groups of birds, including weaverbirds, rooks, certain swallows, bee eaters, herons, cormorants, seagulls, terns, auks, penguins, and petrels. Marine birds have the largest nesting colonies: auks in the arctic and northern Pacific Ocean, penguins and petrels in the antarctic, and cormorants and gannets near the coast of South America. (In South America the bird droppings, or guano, are gathered and used as fertilizer.) In the USSR large nesting colonies are found on the shores of northern seas (auks and seagulls form so-called bird bazaars there), in the Volga delta, and in Transcaucasia (massive breeding sites of herons and other species). To maintain and enlarge reserves of valuable bird species, the territories of many nesting colonies have been designated as sanctuaries.

G. P. DEMENT’EV

References in periodicals archive ?
Annotated atlas and implications for the conservation of heron and egret nesting colonies in the San Francisco Bay Area.
Expected results: Reduced threats for the 13 nesting colonies and increased reproductive output at the target sites; Decreased disturbance of the nesting colonies, thanks to the better attitude and behaviour of boat owners and operators, and of other users responsible for the organic littering of the target areas; Improved policy such as that on light pollution and the management of an offshore island (Comino) that will be used as a sanctuary for Yelkouan shearwaters; and National Species Action Plan for the Yelkouan shearwater in Malta.
Instead, we relied on multiple nest occurrences in the database to identify possible nesting colonies.
The complete compilation includes 42 island hills with the majority of them out of bounds during the summer due to seabird nesting colonies, or their general inaccessibility.
Morbidity and mortality events caused by avian paramyxovirus-1 (APMV-1) in double-crested cormorant (DCCO; Phalacrocorax auritus) nesting colonies in the US and Canada have been sporadically documented in the literature.
Considering their striking plumage, dense monotypic nesting colonies, the arrival of the expedition during the breeding season, and Craveri's passion for birds, had there been terns on Rasa it is hard to believe he and his companions overlooked them after 8 d of tramping through the island (Fig.
The RSPB will use the grant to upgrade the island's outdated CCTV system so wardening staff can monitor the nesting colonies effectively for illegal activity such as egg theft and disturbance of roseate terns.
The ability to distinguish between high- and low-quality nest sites might allow the formulation of effective conservation measures and improved future management of heron nesting colonies.
In the area under inquisition, the nesting colonies of Cattle Egrets were recorded to be exclusively monospecific with only Cattle Egrets nesting on the nesting tree.
Moorland fires can have a devastating effect on the population with blazes destroying four nesting colonies, out of a total of about 20, in April alone.
The tracking devices take a reading every 100 seconds, allowing the scientists to accurately pinpoint birds'' movements between nesting colonies and the areas of sea the birds use to find food.
The seabird devices will take a reading every 100 seconds, allowing the scientists to accurately pinpoint movements between nesting colonies and the areas of sea they use to find food.