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New Hampshire's ‘State of the Birds' - “Empty Skies: The Decline of Aerial Insectivores”

... phoebe), kingbird (Tyrannus tyrannus), eastern pewee (Contopus virens), and olive-sided (Contopus cooperi), as well as each of the five species of Empidonax flycatchers. These ...

Story - Henk Tennekes - 19/03/2012 - 17:19 - 1 commentaire - 0 fichier attaché

The proverbial clock may well be ticking down on many common species of aerial insectivores in Canada

... Swallow Petrochelidon pyrrhonota, Olive-sided Flycatcher Contopus cooperi, Eastern Wood-Pewee Contopus virens, Northern Rough-winged Swallow ...

Story - Henk Tennekes - 21/10/2011 - 14:45 - 1 commentaire - 1 fichier attaché

Most of the avian insectivores are declining in northeastern North America

... the common nighthawk Chordeiles minor and olive flycatcher Contopus cooperi (threatened nationally, of special concern provincially), Acadian ...

Story - Henk Tennekes - 16/10/2011 - 03:21 - 1 commentaire - 0 fichier attaché

Top 20 Common US Birds in Decline

... grasshoppers, and seeds. 12 Olive-sided Flycatcher Contopus cooperi: -73.2%; 2003 population estimate: 1,200,000. They wait on a perch at ...

Story - Henk Tennekes - 27/10/2011 - 09:47 - 1 commentaire - 2 fichiers attachés