{"id":215,"date":"2016-05-28T21:14:05","date_gmt":"2016-05-28T21:14:05","guid":{"rendered":"http:\/\/wordpress.viu.ca\/viubirdbanding\/?page_id=215"},"modified":"2026-09-04T22:41:05","modified_gmt":"2026-09-04T22:41:05","slug":"2025-swallow-status","status":"publish","type":"page","link":"https:\/\/wordpress.viu.ca\/viubirdbanding\/2025-swallow-status\/","title":{"rendered":"2026 Swallow Nest Box Status"},"content":{"rendered":"\n

Statistics of Swallow Nest Boxes at Buttertubs West Marsh in 2026<\/strong>.<\/p>\n\n\n\n

Number of boxes: 30
Number of boxes with eggs: 28 (93%)
Number of eggs laid: 143
Mean clutch size (range): 4.9 (2-7)
Number of eggs hatched (% eggs hatched): 103 (72%)
Number of nestlings banded (% nestlings banded): 69 (67%)
Number of females banded: 17
Number of males banded: 2
Number fledged (% nestlings fledged): 40 (39%)
% eggs to fledglings: 28%
Fledging rate (young per pair): 1.4<\/p>\n\n\n\n

Summary statistics of Tree Swallow nesting productivity at Buttertubs West Marsh during 2022-2026, and 13-year average.<\/strong><\/p>\n\n\n\n

\n Parameter<\/strong>\n <\/td>2022<\/strong><\/td>2023<\/strong><\/td>2024<\/strong><\/td>2025<\/strong><\/td>2026<\/strong><\/td>14-year
Average<\/strong><\/td><\/tr>
Number of boxes<\/td>36<\/td>36<\/td>30<\/td>30<\/td>30<\/td>—<\/strong><\/td><\/tr>
Number of boxes with eggs (% of boxes with eggs)<\/td>20
(56%)<\/td>		24
(67%)<\/td>		25
(83%)<\/td>		25
(83%)<\/td>		28
(93%)<\/td>		22
(70%)<\/strong><\/td><\/tr>
Number of eggs laid<\/td>131<\/td>138<\/td>154<\/td>139<\/td>143<\/td>130<\/strong><\/td><\/tr>
Mean clutch size (range) <\/td>5.7
(2-7)<\/td>		5.3
(3-6)<\/td>		5.5
(2-7)<\/td>		5.1
(2-7)<\/td>		4.9
(2-7)<\/td>		5.1<\/strong><\/td><\/tr>
Number of eggs hatched (% eggs hatched)<\/td>116
(89%)<\/td>		120
(87%)<\/td>		104
(68%)<\/td>		124
(89%)<\/td>		103
(72%)<\/td>		97
(74%)<\/strong><\/td><\/tr>
Number of nestlings banded (% nestlings banded) <\/td>115
(99%)<\/td>		97
(81%)<\/td>		82
(79%)<\/td>		114
(92%)<\/td>		69
(67%)<\/td>		81
(83%)<\/strong><\/td><\/tr>
Number fledged (% nestlings fledged)<\/td>102
(88%)<\/td>		83
(69%)<\/td>		62
(60%)<\/td>		106
(85%)<\/td>		40
(39%)<\/td>		62
(65%)<\/strong><\/td><\/tr>
% eggs to fledglings<\/td>78%<\/td>60%<\/td>40%<\/td>85%<\/td>28%<\/td>49%<\/strong><\/td><\/tr>
Fledging rate (young per pair)<\/td>4.4<\/td>3.2<\/td>2.2<\/td>3.9<\/td>1.4<\/td>2.5<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Statistics of Swallow Nest Boxes at Buttertubs West Marsh in 2026. Number of boxes: 30Number of boxes with eggs: 28 (93%)Number of eggs laid: 143Mean clutch size (range): 4.9 (2-7)Number of eggs hatched (% eggs hatched): 103 (72%)Number of nestlings … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":273,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-215","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages\/215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/users\/273"}],"replies":[{"embeddable":true,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/comments?post=215"}],"version-history":[{"count":76,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages\/215\/revisions"}],"predecessor-version":[{"id":1877,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages\/215\/revisions\/1877"}],"wp:attachment":[{"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/media?parent=215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}