Bat monitoring in Hartland - 2024
Summary of emergence surveys (sunset - 30 minutes to sunset + 180 minutes):
Dates recorded:
Barbastelle Bat 16/04 - 12/05
Brandt’s Bat 17/04 - 22/04
Brown Long-eared Bat 04/02 - 15/05
Common Pipistrelle 04/01 - 16/05
Daubenton's Bat 16/04 - 11/05
Greater Horseshoe bat 14/05 - 15/05
Grey Long-eared Bat 26/03 - 16/05
Leisler’s Bat 20/03 - 06/05
Lesser Horseshoe Bat 04/01 - 15/05
Myotis sp. 16/03 - 15/05
Nathusius's Pipistrelle 16/04 - 15/05
Natterer's Bat 09/02 - 22/04
Noctule Bat 09/02 - 16/05
Serotine 15/03 - 16/05
Soprano Pipistrelle 04/01 - 16/05
Whiskered Bat 01/04 - 01/04
Total number of recordings:
Soprano Pipistrelle 4647
Noctule bat 1942
Common Pipistrelle 407
Lesser Horseshoe bat 102
Serotine bat 85
Natterer's bat 20
Brown Long-eared bat 19
Nathusius's Pipistrelle 14
"Myotis species" 13
Leisler’s bat 8
Daubenton's bat 7
Brandt’s bat 3
Greater Horseshoe bat 3
Grey Long-eared bat 3
Barbastelle bat 2
Whiskered bat 1
Total of 7276 passes in 59 surveys
Last updated 17/05/24
Observaciones
Qué
Murciélago de Cabrera (Pipistrellus pygmaeus)Observ.
baldersDescripción
Hockey stick shaped call; peak frequency 56.9 kHz. Emerged from roost at 17:50
Qué
Murciélago Enano o Común (Pipistrellus pipistrellus)Observ.
baldersDescripción
Emerged 53 minutes after sunset. Hockey stick shaped call with peak frequency of 43.9 kHz
Qué
Nóctulo Pequeño (Nyctalus leisleri)Observ.
baldersDescripción
Chip-chop call with chop starting above 25 kHz
Qué
Murciélago Orejudo Dorado U Orejudo Septentrional (Plecotus auritus)Observ.
baldersDescripción
Steep two part call; starting at 74 kHz, ending at 12.8 kHz with a peak frequency of 27 kHz. ID'd manually but verified by BTP Pipeline with 96% confidence
Fotos / Sonidos
Qué
Murciélago Orejudo Gris U Orejudo Meridional (Plecotus austriacus)Observ.
baldersDescripción
Manually ID'd as GLEB due to steep calls with starting frequency all below 48 kHz and peak frequency of 24 kHz. Echometer & BTO pipleline ID as Grey Long-eared Bat as well
Qué
Murciélago Pequeño de Herradura (Rhinolophus hipposideros)Observ.
baldersDescripción
Lesser Horseshoe around 110 kHz with Common Pipistrelle (steep calls between 45 & 75 kHz)
Qué
Murciélago Ratonero Gris (Myotis nattereri)Observ.
baldersDescripción
Steep straight call with starting frequency of 126 kHz
Qué
Barbastela (Barbastella barbastellus)Observ.
baldersDescripción
1st recording of 2024; normally Barbastelle's are recorded year round here - a very late emergence from hibernation.
Classic straight line call starting at 36 kHz & ending at 29 kHz. peak frequency 33.8 kHz
Qué
Murciélago Grande de Herradura (Rhinolophus ferrumequinum)Observ.
baldersDescripción
1st recording of 2024; inverted horseshoe shaped call at 83 kHz.
Observed during manual review; not detected by autoid or review on BTO Pipeline
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