Apus apus (Common swift) activity

See the main page for notes, photos, and diaries for all years.

Activity in inspected boxes, all years (prediction in red italic; '<' 'less-than' or '>' 'greater than' date could be earlier/later).
YearNestAdult1Adult2Egg1Egg2Egg3HatchFledge1Fledge2Fledge3Comments
2013#1May-6May-15May-25May-28May-31Jun-17Jul-30Jul-31Aug-1
2014#1May-5May-9May-22May-25-Jun-13Jul-26Jul-27-
2014#4May-7May-13May-24May-26-Jun-13Jul-24Jul-26-
2015#1May-5May-8May-22May-24May-26Jun-15Jul-29Jul-31Aug-2
2015#4May-4May-10May-19May-21May-24Jun-12Jul-21Jul-21Jul-23
2016#1May-4May-7May-20May-22-xOne adult disappeared Jun-1
2016#1aJun-7Jun-15Jun-17-Jul-5Aug-16Aug-18-New adult arrived Jun-7
2016#4May-5May-5May-14May-16-Jun-4Jul-16Jul-16-
2016#g3??Jun-17Jun-19-Jul-8?Aug-18/20Aug-22-
2016#g6???Jul-18/21?-xEggs gone Aug-5
2017#1May-6May-15May-22May-25-Jun-14Jul-26--2nd egg didn't hatch
2017#4May-5May-9May-18May-20May-22Jun-8Jul-19Jul-22Jul-22
2017#g3?<May-17?<May-28-<Jun-16xJun-30, no eggs or young, one chick carcase
2017#g3a??Jul-1/5Jul-3/7-<Jul-25Sep-9--Re-lay after earlier failure. One chick died at a few days old.
2017#g6?<May-17?<May-28-<Jun-16Jul-25Jul-25-Jun-30, 2 chicks present
2018#1May-7May-8May-18May-21-Jun-9Jul-22Jul-23-
2018#2??<Jun-29?-Jul-17Aug-24--2nd egg not in nest, replaced, but didn't hatch.
2018#4May-18May-23May-31Jun-2Jun-4Jun-20Jul-30Jul-31-2 chicks. One egg didn't hatch.
2018#g1??>Jun-3<Jun-7?<Jun-29Aug-4/7Aug-4/7Aug-4/73 chicks seen Jun-29, one newly hatched, others larger.
2018#g3?<May-14May-20May-22May-24Jun-10Jul-23?Jul-23?Jul-23
2018#g4??>Jun-16<Jun-23-Jul-5/12Aug-20--Jul-4, now only one egg. Chick first seen Jul-12.
2018#g6?<May-14>May-25<May-29-Jun-15/17Jul-24Jul-25-May-24, one damaged egg, not in nest. 2 chicks first seen Jun-23.
2018#sb2?<May-28Jun-4Jun-6-Jun-25?Aug-3Aug-3-'Starling' box. Chicks first seen Jul-1.
2019#1May-7May-11May-18May-20May-22Jun-9Jul-21
2019#2<May-16???-<Jun-21<Aug-2
2019#3<May-13?May-25/27??~Jun-16~Jul-28
2019#4May-15May-16*May-23May-25May-27Jun-13Jul-25*First egg removed by 'intruder' swift on May-24. Replaced in nest May-27, but did't hatch. Only 1 egg hatched.
2019#5<May-14?<May-24May-25May-27~Jun-13~Jul-25Swifts took over house-sparrow nest.
2019#g1<May-12?<May-24??<Jun-16xNest empty Jun-21, eggs/embryo on ground outside.
2019#g3<May-12<May-27???~Jun-16~Jul-28
2019#g4?<May-24???~Jun-16~Jul-28
2019#g6<May-10<May-27???<Jun-16<Jul-28
2019#sb2May-15<May-17>May-23<May-27?~Jun-16<Jul-28Only 2 of 3 eggs hatched.

Predicted dates above based on the average for previous nests with camera: last egg to hatching 19 days; hatching to first fledging 42 days.


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Author: Clarke Brunt (clarke.brunt@viridis.net)
Last modified: 23rd June 2019