[nfc-l] Western radar?

I know I've asked this of various folks before, and probably gotten reasonable if short answers, but I'm blanking out on the reasons. Can anyone shed light on why radar doesn't really work for detecting night flights in the intermountain West and the West Coast, esp. south? Is it literally that

Re: [nfc-l] Western radar?

Jesse, The NEXRAD network of radars are similar in design and therefore detect birds similarly. The radars out west have much more limited views of migration because the topography leads to partial or complete blockage of the radar beam or the radars are sited at

[nfc-l] identification help with spectrogram

I am wondering if anyone would be able to help me out with the identification of the NFC I have in the attached spectrogram. Thanks, David -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES