16 BBC Wildlife July 2020
WILDJULY
GilbertWhite,theparson-naturalist-
diaristborn 300 yearsagothismonth,
wasobsessedwithswifts.Hepondered
howtheymate,gathernestmaterial,
learntofly,wheretheygoinwinter.Like
ustoday,healsolovedthesoundoftheir
screamingparties(that’sthetechnical
term),wheresquadronsofswiftstear
helter-skelteraroundrooftopsatdusk.
Theseboisteroussocialgatherings
includebreedingpairsandnon-
breeders,becomingmorefrequentas
summerwearsonandthe birds’ August
migrationapproaches.
FINDOUTMORE
Howtohelpswifts:
swift-conservation.org
5 |SWIFT
Life’s a scream
Coralsaren’ttheonlyanimalsable
tocreatereefs– marineworms
can,too.Honeycombwormsare
namedforthesubstantialshoreline
structurestheyproduce,which
areactuallycoloniesmadeupof
manyindividualwormtubes,each
builtfromgrainsofsandorshell
fragments.Thewormcitiescover
rocksentirely,andclumpsmay
spreadouttoformreefs.Look
forthematlowtideonsouthern
andwesterncoasts,inplaces
suchasCornwall,Devon,the
SevernEstuary,Cardigan Bay and
MorecambeBay.
FINDOUTMORE
Allaboutthespecies:
honeycombworms.org
7 |HONEYCOMBWORM
Reef builders
Knapweed & honeycomb worm: Alex Hyde; swift: Mike Lane
6 |COMMONKNAPWEED
Nectarnirvana
Describedas“Lucozadeforbees”
byProfessorDaveGoulson,
knapweedproducescopious
amountsofnectar.Togetherwith
whitecloverandmarshthistle,it
wasfoundbya teamledbythe
UniversityofBristoltobeone
ofthemostimportantBritish
wildflowersforpollinatinginsects.
Common,orblack,knapweed
is a widespreadgrasslandplant,
andthrivesingardens– youcan
growit fromseed.Afterflowering,
theseedheadsarepopularwith
goldfinchesandbullfinches.
GETINVOLVED
Downloadwildflowerspotter
sheets:plantlife.org.uk/uk/
discover-wild-plants-nature/
spotter-sheets
TWEETOF
THEWEEK
Weeklybirdsongpodcast
with guest hosts.
ONLINE