Survey template header

Home > WeBS Alerts Contents > SSSI Contents > Site Accounts

WeBS Logo

The Wetland Bird Survey (WeBS) - Alerts

Inner Marsh Farm

Data evaluated: winters to 2004/05 inclusive
(New evaluation due: December 2009 to include additional data to winter 2007/08)

 
3 Species evaluated: Teal, Pintail, Black-tailed Godwit
0 Species not evaluated:

High Alert:

 Teal(d), Pintail(d), Black-tailed Godwits,l,(d)

Medium Alert:


Summary:

  • Of the three species evaluated, alerts have been triggered for one species.
  • Of the one species that have had Alerts triggered, three species have had High-Alerts triggered.
  • Of the one species that have had Alerts triggered, 3 Alerts have been flagged as precautionary because the species in question exhibits inherent variability in numbers.

Species/Site Accounts:

View Plots:

WeBS Logo

s Short-term (5-year)
m Medium-term (10-year)
l Long-term (25-year or maximum available if less)

Trends have been assessed over the short-, medium-, and long-terms (5, 10 and up to 25 years respectively). Where data have been collected for less than 25 years (see Methods) the maximum number of years available are used for calculating long-term alerts (specific details are available within the detailed account). Where time periods for which Alerts are triggered are given in parentheses this indicates that the degree of change in numbers that has triggered that Alerts might be considered within the range of normal fluctuation for a "healthy population" of the species in question over the period indicated (see Methods 2.3 - biological filter), and as such will not necessarily be discussed in detail.

Home | About BTO | Surveys | Research | Garden BirdWatch
Ringing | News & Events| Membership | Ornithological Links

© British Trust for Ornithology
BTO, The Nunnery, Thetford, Norfolk IP24 2PU
Tel: +44 (0)1842 750050 Fax: +44 (0)1842 750030 Email: info@bto.org
Registered Charity Number 216652. This page last updated: 11 January, 2008