AVIS-IBIS

Birds of Indian Subcontinent

The Nesting of the Pine Siskin in Nebraska

Publication Type:Journal Article
Year of Publication:1965
Authors:Perry, AE
Journal:The Wilson Bulletin
Volume:77
Issue:3
Date Published:1965
ISBN Number:00435643
Keywords:Carduelis, Carduelis pinus, Carduelis Spinus, Fringillidae, Spinus, Spinus pinus, Spinus spinus
Abstract:Nesting behavior of the Pine Siskin, and development of the young in four nests was studied at Lincoln, Nebraska during the spring of 1961. Nests, consisting of three layers of readily available material (grass, rootlets, and hair), were constructed in small shrubs in close proximity to buildings. The normal clutch size appeared to be three or four eggs. Incubation did not appear to begin with the laying of the first egg as all eggs in the nest hatched within a maximum of 36 hours. Incubation and brooding was apparently carried on entirely by the female. During incubation and the first part of the nestling stage the male fed the female on the nest and the female than fed the developing young. Feeding was by regurgitation. Nest sanitation continued for 5 or 6 days. Throughout the incubation and nestling stages the female siskin demonstrated a strong instinct to protect the eggs and young. Weight of the young at hatching was 1.1 grams and development to fledging was complete in 13 days. Nest leaving was probably earlier than normal due to repeated disturbance and observation. One nest studied was parasitized by the cowbird and the young cowbirds were cared for by the adult siskins for about 6 days at which time they were apparently deserted.
URL:http://www.jstor.org/stable/4159394
Short Title:The Wilson Bulletin
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