Some of my birding friends and colleagues tell me that they have the impression I have spent 2011 just chasing Waxwings and Spotted Flycatchers......I have no idea why.
Apart from regular butterfly chasing (weather permitting) and culminating, so far, in the Lincs Branch of Butterfly Conservation Open Day on Sun 31 July, (with, hopefully, Brown Hairstreak to come), I have also taken a deep interest not only in the plethora of Peregrine webcams on the net, and in the Louth Peregrine saga, but also in personally visiting a number of 'real' Peregrine nest sites (with follow-up LBC reports) at the following locations :
St. Wulfram's Church, Grantham
Lincoln Cathedral
Nottingham Trent University
Derby Cathedral.
Further to this post regarding the Peregrine Prey List at St. Wulfram's Church (where I spent some time looking for prey item carcases on 21 May, and reporting back to Alan Ball), the following article from the Derby Cathedral Peregrine Project website - http://derbyperegrines.blogspot.com will be of at least a modicum of interest, including the 30 comments as given, to like-minded Peregrine lovers/aficionados/devotees/groupies/peregrinophiles (take your pick).
Freddy
Wednesday, 27 July 2011
Peregrine prey - latest finds
Yesterday afternoon (27th) I helped Tony G (Head Verger) clean up the Derby Cathedral nave roof, a job we do annually after the breeding season is over. The falcon was sitting on the edge of the platform when we emerged onto the roof, probably asleep since we were able to walk down from the roof's apex to the lowest part and out along the roof before she even noticed us.
Of course when she did see us she made quite a noise, flying off directly onto the Jury's Inn lettering. As soon as she made her alarm call, the male, who had been on Jurys Inn, set off and circled towards the tower but veered off before coming even half way (he's such a wimp!). No immediate sign of any juveniles by the way.
Prey remains were spread about, most having been washed or rolled down to the gullies at the edges. Fortunately it has been dry for several days so the remains were not as smelly as they can be.
Among the species noted were teal, moorhen, little grebe, snipe, lapwing, golden plover, mistle thrush, quail, several starlings, fieldfare and great spotted woodpecker as well as pigeons of course.
We also found the head of a kingfisher (and later its body), this being a first for this species in Derby (though it has been found as prey elsewhere several times).
These peregrines certainly like to have a varied diet. So far we have found over 50 species of bird represented - that's a very wide food spectrum.
Some of you may find this rather disturbing but peregrines (like most humans) are predators. They feed only on birds caught in flight (with the one notable exception of a rat brought in for the young a few years ago). It's what they do, they have no choice in the matter. We may wish that they would refrain from taking the more 'attractive' and rare species but their hunting is often opportunistic so they catch what they see in front of them, wherever they are.
This spread of prey species means that they don't make any impact on the numbers of one particular species, preying on different birds without simply eating one kind monotonously.
Having said that, our Derby birds do have a liking for wading birds. We now have 12 wader species on the list....remarkable for a site with so few suitable wetland habitats nearby. Many (eg woodcock, godwits, knot etc) were probably caught as they migrate over Derby at night.
Quite why they bother catching such small birds as blackcaps and even goldcrests is a mystery. Perhaps they like the challenge or perhaps they just can't resist a small 'snack'.....who knows.
We certainly know that our adults hunt by night, using the floodlighting in Derby to spot birds flying over the city. Of the above list, little grebes and the quail were almost certainly caught in this way, both being strictly night fliers/migrators....
Nick B (DWT)
To see the 30 comments as given, go to the entry on 27th July 2011 at
http://www.derbyperegrines.blogspot.com/
The website also includes many interesting items on the Derby Cathedral Peregrine Project 2011.