Natural history and reproductive biology of the communally breeding Greater Ani (Crotophaga major) at Gatun Lake, Panama.(Report): An article from: The Wilson Journal of Ornithology
Book Details
Author(s)Christina Riehl, Laura Jara
PublisherWilson Ornithological Society
ISBN / ASINB0035P7E2O
ISBN-13978B0035P7E27
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from The Wilson Journal of Ornithology, published by Wilson Ornithological Society on December 1, 2009. The length of the article is 6203 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: The Greater Ani (Crotophaga major) is the least well-known of the communally breeding crotopbagine cuckoos, although it is locally abundant in Panama and northern South America. We present substantial new life history information from 87 breeding groups of Greater Anis at Gattin Lake, Panama, and the first description of their conspicuous, highly stereotyped communal displays. Breeding groups were composed of two to five socially monogamous pairs; no pairs nested singly. Seven groups also included an unpaired individual, which in three cases was confirmed to be a 1-year-old male from the previous year's nest. Groups of two and three pairs were most common (accounting for 75 and 20% of groups, respectively); groups containing more than three pairs were rare and their nests were abandoned before incubation began. Eggs were large (~17% of adult body mass) and varied greatly in size (19-37 g). Egg and nestling development were exceptionally rapid: eggs were incubated for 11-12 days and nestlings were capable of leaving the nest after 5 days, although adults continued to feed fledglings for several weeks. On average, each female laid 4.3 [+ or -] 0.9 eggs; three-pair groups had larger overall clutch sizes than did two-pair groups. The first 2-3 eggs to be laid were usually ejected from the nest by other group members, and number of ejected eggs increased with group size. Thirty-seven nests (43%) fledged at least one young successfully; snakes (Pseustes, Spilotes, Boa) and white-faced capuchin monkeys (Cebus capuchinus) were identified as nest predators.
Citation Details
Title: Natural history and reproductive biology of the communally breeding Greater Ani (Crotophaga major) at Gatun Lake, Panama.(Report)
Author: Christina Riehl
Publication:The Wilson Journal of Ornithology (Magazine/Journal)
Date: December 1, 2009
Publisher: Wilson Ornithological Society
Volume: 121 Issue: 4 Page: 679(9)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: The Greater Ani (Crotophaga major) is the least well-known of the communally breeding crotopbagine cuckoos, although it is locally abundant in Panama and northern South America. We present substantial new life history information from 87 breeding groups of Greater Anis at Gattin Lake, Panama, and the first description of their conspicuous, highly stereotyped communal displays. Breeding groups were composed of two to five socially monogamous pairs; no pairs nested singly. Seven groups also included an unpaired individual, which in three cases was confirmed to be a 1-year-old male from the previous year's nest. Groups of two and three pairs were most common (accounting for 75 and 20% of groups, respectively); groups containing more than three pairs were rare and their nests were abandoned before incubation began. Eggs were large (~17% of adult body mass) and varied greatly in size (19-37 g). Egg and nestling development were exceptionally rapid: eggs were incubated for 11-12 days and nestlings were capable of leaving the nest after 5 days, although adults continued to feed fledglings for several weeks. On average, each female laid 4.3 [+ or -] 0.9 eggs; three-pair groups had larger overall clutch sizes than did two-pair groups. The first 2-3 eggs to be laid were usually ejected from the nest by other group members, and number of ejected eggs increased with group size. Thirty-seven nests (43%) fledged at least one young successfully; snakes (Pseustes, Spilotes, Boa) and white-faced capuchin monkeys (Cebus capuchinus) were identified as nest predators.
Citation Details
Title: Natural history and reproductive biology of the communally breeding Greater Ani (Crotophaga major) at Gatun Lake, Panama.(Report)
Author: Christina Riehl
Publication:The Wilson Journal of Ornithology (Magazine/Journal)
Date: December 1, 2009
Publisher: Wilson Ornithological Society
Volume: 121 Issue: 4 Page: 679(9)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
