| Bat Surveys Photos Copyright: J Kaczanow |
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Underground Hibernation Counts
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Site |
Species |
Date 2005/06 |
Number |
Date 2006/07 |
Number |
Date |
Number
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Date |
Number |
Date |
Number |
| Prideaux | Greater horseshoe (Rhinolophus ferrumequinum) | 13/11/05 | 30 |
12/02/06 |
37 | 12/11/06 | 33 | ||||
| Prideaux | Lesser horseshoe (Rhinolophus hipposideros) | 13/11/05 | 8 |
12/02/06 |
16 | 12/11/06 | 5 | ||||
| Par | Lesser horseshoe (Rhinolophus hipposideros) | 13/11/05 | 4 |
12/02/06 |
9 | 12/11/06 | 3 | ||||
| EastWheal Charlotte | Greater horseshoe (Rhinolophus ferrumequinum) | 18/12/05 | 1 | 03/12/06 | 2 | 02/01/07 | 3
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| East.Wheal Charlotte | Daubenton's (Myotis daubentonii) | 18/12/05 | 2 | 03/12/06 | 1 | ||||||
| East Wheal Charlotte | Lesser horseshoe (Rhinolophus hipposideros) | 03/12/06 | 1 | 02/01/07 | 2 | ||||||
| East Wheal Charlotte | Whiskered (Myotis mystacinus ) | 02/01/07 | 1 | ||||||||
| Trebarwith | Greater horseshoe (Rhinolophus ferrumequinum) | 20/12/05 | 3 | ||||||||
| St. Agnes | Greater horseshoe (Rhinolophus ferrumequinum) | 15/01/06 | 56 |
9/04/06 |
67 | 07/01/07 | 75 | 04/03/07 | 40 | ||
| St. Agnes | Lesser horseshoe (Rhinolophus hipposideros) | 15/01/06 | 1 |
9/04/06 |
2 | ||||||
| St. Agnes (T) | Natterer's (Myotis nattereri) | 9/04/06 | 1 | ||||||||
| Perranporth | Lesser horseshoe (Rhinolophus hipposideros) | 15/01/06 | 1 |
9/04/06 |
2 | ||||||
| Perranporth | Greater horseshoe (Rhinolophus ferrumequinum) | 15/01/06 | 27 |
9/04/06 |
22 | 07/01/07 | 12 | ||||
| Helston | Lesser horseshoe (Rhinolophus hipposideros) | 22/01/06 | 8 | 21/01/07 | 10 | ||||||
| Helston | Greater horseshoe (Rhinolophus ferrumequinum) | 21/01/07 | 1 | ||||||||
| Mount | Lesser horseshoe (Rhinolophus hipposideros) | 29/01/06 | 3 | ||||||||
| Mount | Greater horseshoe (Rhinolophus ferrumequinum) | 29/01/06 | 2 | ||||||||
| Bolingey | Greater horseshoe (Rhinolophus ferrumequinum) | 29/01/06 | 1 | ||||||||
| Barrets Zawn | Greater horseshoe (Rhinolophus ferrumequinum) | 14/01/07 | 6 | ||||||||
| Pillaton | Greater horseshoe (Rhinolophus ferrumequinum) | 11/03/07 | 8 | ||||||||
| Pillaton | Lesser horseshoe (Rhinolophus hipposideros) | 11/03/07 | 14 | ||||||||
| Cligga | 18/03/07 | 0 | |||||||||
| Colan Woods | Greater horseshoe (Rhinolophus ferrumequinum) | 18/03/07 | 3 | ||||||||
| Colan Woods | Lesser horseshoe (Rhinolophus hipposideros) | 18/03/07 | 1 | ||||||||
| Ventongimps | Greater horseshoe (Rhinolophus ferrumequinum) | 25/03/07 | 5 | ||||||||
| Ventongimps | Natterer's (Myotis nattereri) | 25/03/07 | 3 | ||||||||
| Bolingey | 25/03/07 | 0 |
Bat Box Checks
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Site |
Species |
No. |
Date |
| New Mill | Brown long-eared (plecotus auritus) | 4 | 29/11/06 |
| Idless Woods | Common pipistrelle (pipistrellus pipistrellus) | 4 | 29/11/06 |
Noctule Project Investigation.
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 28/04/06 | Site 1 M/Tree | No Bats | No Bats | 0 | None | Site will be monitored again next month. |
| 28/04/06 | Site 2 P/woods | 21:10 | 35 | 12 Daubentons recorded emerging from same tree | Difficulty recording all bats as site was very dark. Night vision proposed for next visit | |
| 28/04/06 | Site 3 P/Mill | 20:45 | 21:40 | 170 | Common Pipistrelles noted entering exit point after Noctules had emerged. | Far greater number of bats than thought roosting. Is this the largest (known) roost in the UK? |
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 26/05/06 | Site 1 M/Tree | 21:20 | 21:20 | 1 | Common pipistrelles noted feeding nearby | Interesting that a single (male?) bat was recorded. |
| 26/05/06 | Site 2 P/woods | 21:10 | 21:35 | 39 | No other species noted. | Daubenton's appear to have left tree. |
| 26/05/06 | Site 3 P/Mill | 21:20 | 21:40 | 139 | None | It would appear that the number of bats has now dropped....have the majority of males now left this roost? |
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 30/6/06 | Site 1 M/Tree | 21:45 | 22:05 | 2 | Many Common Pipistrelles) | One further bat from last visit |
| 30/6/06 | Site 2 P/woods | Nil | Nil | 0 | No bats emerged from tree | This is consistent with previous years when young bat were recorded but then the roost appeared to move. Two large 'American style' bat boxes have now been erected onto trees within the woods . It will be interesting to monitor these on our next visits. |
| 30/6/06 | Site 3 P/Mill | 21:25 | 22:10 | 126 | Pipistrelles were also noted | It would appear that all males have now left. Baby bats were heard within roof void of the Mill. |
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 11/8/06 | Site 1 M/Tree | 21:15 | 21:15 | 1 | Common pipistrelle bats recorded foraging along lane | |
| 11/8/06 | Site 2 P/woods | 0 | No other bats recorded | |||
| 11/8/06 | Site 3 P/Mill | 20:45 | 21:25 | 105 | Common pipistrelle bats noted emerging from other area of roof void of property. | |
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 08/9/06 | Site 1 M/Tree | 0 | Common pipistrelle and barbastelle recorded within area | Noctules heard calling presumably from tree roost. | ||
| 08/9/06 | Site 2 P/woods | 0 | No bats recorded | |||
| 08/9/06 | Site 3 P/Mill | 19:45 | 20:30 | 75 | Several pipistrelles noted around building | Number of bats within this roost are slowly decreasing as they move to Autumn/winter sites. |
| Date | Site | First Bat Emerged | Last Bat Emerged | No. | Other Species Noted | Notes |
| 18/05/07 | Site 2 P/woods | 20:45 | 21:00 | 47 | ||
| 18/05/07 | Site 3 P/Mill | 20:50 | 21:05 | 107 | ||
| 1/06/07 | Site 1 M/Tree | 0 | ||||
| 1/06/07 | Site 2 P/woods | 21:10 | 21:12 | 4 | 3 unidentified myotis emerged from tree | |
| 1/06/07 | Site 3 P/Mill | 21:10 | 21:40 | 194 | 2 common pipistrelle also emerged from mill | Fabulous site and sight, numbers appear to be increasing |
| 06/7/07 | Site 1 M/Tree | 1 | Bat appeared to be called out another noctule in area | |||
| 06/7/07 | Site 2 P/woods | 0 | No bats recorded exiting from tree. | |||
| 06/7/07 | Site 3 P/Mill | 21:40 | 22:10 | 138 | Numbers have now dropped(males left roost?) 1 brown long-eared noticed in area and a common pipistrelle entered roof void (noctule entrance) |
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| 3/08/07 | Site 3 P/Mill | 21:15 | 21:55 | 239 | No other bats recorded emerging. Some bats remained probably juveniles (could be heard in roost) |
Largest number counted out to-date |
The results noted here and sent to the county records centre have been obtained by the hard work of members of Cornwall Bat Group.
If you wish to use or quote any of Cornwall Bat Groups records written permission must be sought.
Please either contact: Bat Group or ERCISS (County Records Centre)
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