Bat Habitat Survey of Trees Marked as Potential Hazards

LKW Amateur1 Bat Habitat Survey of Trees Marked as Potential Hazards
(from Tree Condition Report 16/5/20)

 

Conducted on 5th June 2020 – Updated following repeat survey 18th June 2020.

 

Highlighted in orange: those trees which look most suitable for bat roosts.

 

Tree Species and Risk Level
(from Tree Condition Report)
Bat Habitat Assessment
1 Sycamore (dbh 8”)  – Moderate 2No visible bat habitat.
2 Ash (dbh 10”) – Moderate No visible bat habitat.
3 Sycamore (dbh 12”) – High Some thick ivy growth (dead) on stem, but probably not sufficient cover for bat roost. Otherwise no other visible bat habitat
4 Sycamore (dbh 12”) – Moderate Some rot at base, but doesn’t appear to go far. Looked up inside base with torch – no bats visible and no bat droppings evident. Some signs of possible rot higher up (moss-covered) but overall no visible bat habitat.
5 Sycamore (dbh 18”) – Low Visible rot on trunk. Some knot holes. Could be bat habitat.
6 Sycamore (dbh 18”) – Moderate Substantial basal rot. Looked up inside base with torch – no bats visible and no bat droppings evident. Some knot holes. Could be bat habitat.
7 Sycamore (dbh 16”) – Low Some basal rot Looked up from base with torch – no bats visible and no bat droppings evident. Some minor rotten branches. Otherwise fairly ‘clean’.
8 Ash (dbh 8”) – Moderate Basal rot and clear rot up the trunk. Ivy growth. Could be bat habitat. Looked up inside base with torch – no bats visible and no bat droppings evident.
9 Holly (dbh 13”) – Low Dead! Knot holes for bats but none look very suitable – small and downward-pointing.
10 Ash (dbh 15”?) – Low Basal rot and faking bark up trunk to 1m. Looked up inside base with torch – no bats visible and no bat droppings evident.
11 Sycamore – Low Rotten at base but not further up. Looked up inside base with torch – no bats visible and no bat droppings evident. No other visible bat habitat
12 Ash – High but NOT ON OUR LAND Part fallen. Didn’t assess as not LKW tree.
13 Sycamore (dbh 15”) – Moderate Significant basal rot. Knot holes from fallen branches. Could be bat habitat. Looked up inside base with torch – no bats visible and no bat droppings evident.
14 Sycamore (multi-stem) – Low Rot at base and flaking bark on stems. One stem rot up to 1.5m Bracket fungus. Looked up inside base with torch – no bats visible and no bat droppings evident.
15 Sycamore (dbh 15”) – Low Substantial rot at base but doesn’t go up inside very far. 1 downward-pointing knot hole. Otherwise ‘clean’.
16 Ash (dbh 12”) – Low Some rot at base. Otherwise ‘clean’. No visible bat habitat.
17 Sycamore (dbh ?) – Low Significant basal rot. Looked up inside base with torch – no bats visible and no bat droppings evident. Some dead branches but no other visible bat habitat.
18 Sycamore (multi-stem) – Low Some basal rot. No visible bat habitat.

 

  1. Conducted by Mandy Lane, member of LKW Trust. No formal qualifications. Had attended a 1-day Bats and Trees course given by Cumbria Woodlands, 2014.

 

  1. ‘No visible bat habitat’: meaning none of the following visible from ground level: cavities, significant rot, knot holes, thick ivy stems or other features that could provide suitable habitat for bats.