Suchen

Suchergebnisse

Chronic toxicity is the most important variable in predicting negative bird population trends associated with pesticides

... Sandpiper (Bartramia longicauda) and Grasshopper Sparrow (Ammodramus savannarum) abundance and agricultural intensity (p<0.05). Linear ...

Story - Henk Tennekes - 22/11/2011 - 05:48 - 0 Kommentare - 1 Anhang

Top 20 Common US Birds in Decline

... food items during the summer. 2 Henslow's Sparrow Ammodramus henslowii: -96.4%; 2003 population estimate: 79,000. These birds ... and lizards. 11 Grasshopper Sparrow Ammodramus savannarum: -77.1%; 2003 population estimate: 15,000,000. They forage on the ...

Story - Henk Tennekes - 27/10/2011 - 09:47 - 0 Kommentare - 2 Anhänge