Bird Sightings

Seen an interesting bird?  Then let us know by submitting a record on our on-line database.  It is easy to do but if you need some instructions take a look at the Submit Sightings Page.  To view the latest sightings just click on the menu item for Latest Sightings.

Some birds are not uncommon in other parts of the country or around our coasts, but may be in Buckinghamshire.  If you want to see just how scarce a particular species is then take a look at the Bucks List.

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Migrant Dates

One of the interesting aspects of birding in Buckinghamshire is the arrival and departure of migrant species (such as the Cuckoo). Questions are often asked as to what is the earliest arrival date, or what is a typical arrival date for a specific species.

The file below is a PDF file containing data on the various migrant birds species found in Buckinghamshire. It includes Summer visitors, Winter visitors and passage migrants. Click on the download button to view the file.

The data in the file has been extracted from Annual Reports for the county from 1971 until 2017. This work was carried out by Jim Rose and Graham Smith.

Please bear in mind the following points :-

  • The average dates given are that of the earliest records received and not the typical arrival date which is obviously somewhat later.   The opposite of course applies to average late dates.
  • Some species that are normally regarded as UK residents (e.g.  Ringed Plover) can be treated as summer visitors to Bucks as there is a clear break in records during the winter months.
  • Some species that are regarded as summer visitors to the UK, may in fact be treated as migrant species in Bucks (e.g.  Wheatear), as it is possible to separate the spring passage from the return passage. Hence there are two sets of tables for these species (see Migrant Summer Visitors).
  • You may find that there are some species missing from the tables that you might have expected to see.  This may be due to the back that some species that are normally regarded as say a summer visitor do turn up during other months making it difficult to determine arrival and departure dates (e.g. Blackcap).
  • Where the occasional exceptional record occurs (e.g. where a normal summer visitor is recorded over wintering) that record is ignored from the average date calculation and from the earliest/latest ever data.  This is indicated against that species in the table.  
  • Additional years data will be added on the publication of the Buckinghamshire Annual Bird Report.

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Below is one example of how migrant arrival dates have changed over the years. It appears that Swallows now arrive up to ten days earlier than previously.

Arrival dates for Swallow from 1972 until 2017
Note that the graph has been “smoothed” by plotting “three year averages”.