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Re: Radar Tracking Website

Subject: Re: Radar Tracking Website
From: madl74
Date: Thu Jun 5, 2014 5:47 pm ((PDT))
>  and


Thanks for those. Very interesting.

Has anyone on this list tracked bats or birds by radar? I looked into this=

with a friend some years ago with a view to using small ship radar to track=

bat migration routes. It is assumed that bats can fly from France to
Southern England such as Myotis alcathoe and possibly Rhinolophus spp. but=

this hasn't been proved.

The block with radar detection seemed to be the expense, compounded with th=
licencing of a mobile radar set in the UK. According to
bats can be radar detected at 3 to 8 miles, but the cost of the radar rig
was not given.

Reference: There is a table in the Eurobats Document No. 3 Table 2
giving the maximum ranges various species can be detected by ultrasound due=

to air absorption. The maximum detectable distance for a Noctule bat (at 17=

KHz) was 100 to 150 metres and only 5 metres for a Lesser horseshoe bat (at=


David Brinicombe

"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.

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