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#91421 - 01/14/03 12:55 AM Post deleted by Wordwind Joined: Sep 2001
Posts: 6,296 Wordwind
Joined: Sep 2001
Piedmont Region of Virginia, U...
#91422 - 01/14/03 04:48 PM Re: Owl Under My Hat Joined: Mar 2002
Posts: 1,692 dxb
Joined: Mar 2002
I offer the following from the Staffordshire Bat Group website:
"All British bats are protected by the 1981 Wildlife and Countryside Act. This means that bats and their roosts are protected from harm and interference.
This protection is needed because Bats are in decline. Old records of bat numbers show us that bat populations have decreased markedly. For instance, the numbers of the Greater Horseshoe bat have declined by over 90% in the last 100 years. In addition to this, in the year that Staffordshire Bat Group was formed, the Mouse-Eared bat was declared extinct in the UK!
The reasons for this decline are loss of suitable roosts and feeding sites."
I understand that intensive agriculture practices have also added to the decline by reducing the numbers of suitable insects.
#91423 - 02/03/03 01:34 AM Re: Bat anatomy Joined: Jan 2001
Posts: 13,858 wwh
Joined: Jan 2001
In looking up descriptions of bats, I encountetered the term "calcar" which might be "keeled" or not.
It took me quite a while to find a description of this term.
The hind legs of many bats are partially or completely joined by a membrane, the uropatagium, which also may enclose the bony
tail. It is supported by the legs, the tail skeleton, and by the calcar, a special cartilaginous extension of the wrist. The calcar
sometimes bears a distinctive projection called a keel. In some species, both the uropatagium and calcar are absent.(the uropatagium is a portion of flight membrane between hind legs and midline.)
But if you look at picture in this URL, to your left there is a label "metacarpal" which must = "wrist".
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