BTO - Breeding Birds of the Wider Countryside: Long-eared Owl

LONG-EARED OWL Asio otus

Conservation Listings
Unlisted/Green Biodiversity Steering Group Conservation Concern List
Long term trend
UK: Unknown

Status Summary
This is one of the most poorly monitored UK species, being very secretive and nocturnal. Only brood size is recorded in sufficient numbers for this species, and indicates no trend over time. Its distribution appears to have decreased markedly but for unknown reasons (*Gibbons et al.* 1993**).

Annual breeding population changes for this species are not currently monitored by BTO

Table of productivity information for Long-eared Owl
Table to be added

Insufficient data on clutch size available for this species
Insufficient data on egg failure available for this species	Insufficient data on nestling failure available for this species
Insufficient data on laying date available for this species	Insufficient data on CES available for this species

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This report should be cited as:
Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Beaven, L.P., Downie, I.S., Freeman, S.N., Leech, D.I., Marchant, J.H.,
Noble, D.G., Raven, M.J., Simpkin, A.P., Thewlis, R.M. and Wernham, C.V. (2002) Breeding Birds in the Wider
Countryside: their conservation status 2001. BTO Research Report No. 278. BTO, Thetford. (http://www.bto.org/birdtrends)

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This page last updated: 21 April, 2008

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