{"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":"2025-08-12T21:22:35","modified_gmt":"2025-08-12T21:22:35","slug":"2025-swallow-status","status":"publish","type":"page","link":"https:\/\/wordpress.viu.ca\/viubirdbanding\/2025-swallow-status\/","title":{"rendered":"2025 Swallow Nest Box Status"},"content":{"rendered":"\n

Statistics of Swallow Nest Boxes at Buttertubs West Marsh in 2025<\/strong>.<\/p>\n\n\n\n

Number of boxes: 30
Number of boxes with eggs: 25 (83%)
Number of eggs laid: 139
Mean clutch size (range): 5.1 (2-7)
Number of eggs hatched (% eggs hatched): 124 (89%)
Number of nestlings banded (% nestlings banded): 114 (92%)
Number of females banded: 25
Number of males banded: 1
Number fledged (% nestlings fledged): 106 (85%)
% eggs to fledglings: 76%
Fledging rate (young per pair): 3.9<\/p>\n\n\n\n

Summary statistics of Tree Swallow nesting productivity at Buttertubs West Marsh during 2021-2025, and 13-year average.<\/strong><\/p>\n\n\n\n

\n Parameter<\/strong>\n <\/td>2021<\/strong><\/td>2022<\/strong><\/td>2023<\/strong><\/td>2024<\/strong><\/td>2025<\/strong><\/td>13-year
Average<\/strong><\/td><\/tr>
Number of boxes<\/td>36<\/td>36<\/td>36<\/td>30<\/td>30<\/td>—<\/strong><\/td><\/tr>
Number of boxes with eggs (% of boxes with eggs)<\/td>27
(75%)<\/td>		20
(56%)<\/td>		24
(67%)<\/td>		25
(83%)<\/td>		25
(83%)<\/td>		21
(68%)<\/strong><\/td><\/tr>
Number of eggs laid<\/td>194<\/td>131<\/td>138<\/td>154<\/td>139<\/td>129<\/strong><\/td><\/tr>
Mean clutch size (range) <\/td>5.1
(3-7)<\/td>		5.7
(2-7)<\/td>		5.3
(3-6)<\/td>		5.5
(2-7)<\/td>		5.1
(2-7)<\/td>		5.1<\/strong><\/td><\/tr>
Number of eggs hatched (% eggs hatched)<\/td>119
(61%)<\/td>		116
(89%)<\/td>		120
(87%)<\/td>		104
(68%)<\/td>		124
(89%)<\/td>		97
(74%)<\/strong><\/td><\/tr>
Number of nestlings banded (% nestlings banded) <\/td>88
(74%)<\/td>		115
(99%)<\/td>		97
(81%)<\/td>		82
(79%)<\/td>		114
(92%)<\/td>		81
(85%)<\/strong><\/td><\/tr>
Number fledged (% nestlings fledged)<\/td>50
(42%)<\/td>		102
(88%)<\/td>		83
(69%)<\/td>		62
(60%)<\/td>		106
(85%)<\/td>		64
(67%)<\/strong><\/td><\/tr>
% eggs to fledglings<\/td>26%<\/td>78%<\/td>60%<\/td>40%<\/td>85%<\/td>50%<\/strong><\/td><\/tr>
Fledging rate (young per pair)<\/td>1.3<\/td>4.4<\/td>3.2<\/td>2.2<\/td>3.9<\/td>2.6<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"

Statistics of Swallow Nest Boxes at Buttertubs West Marsh in 2025. Number of boxes: 30Number of boxes with eggs: 25 (83%)Number of eggs laid: 139Mean clutch size (range): 5.1 (2-7)Number of eggs hatched (% eggs hatched): 124 (89%)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":74,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages\/215\/revisions"}],"predecessor-version":[{"id":1646,"href":"https:\/\/wordpress.viu.ca\/viubirdbanding\/wp-json\/wp\/v2\/pages\/215\/revisions\/1646"}],"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}]}}