Thekla Lark (Galerida theklae) Science Article 1 abstract Parental body mass changes during the nesting period were analysed for Thekla Larks,Galerida theklae, and Lesser Short-toed Larks, Calandrella rufescens. Body mass of femaleThekla Larks declines from the start of incubation until the chicks fledge; laying date,interpreted as the number of renesting attempts, also has a negative […]
Category: Passeriformes
Song structure and repertoire sharing in the Tawny Pipit Anthuscampestris in Poland
Tawny Pipit (Anthus campestris) Science Article 3 abstract The present study characterizes the song of Tawny Pipit males (n = 55) recorded in May 2005 in theWielkopolska region of Poland. Tawny Pipits sang with a very variable rate of 4-28 songs per minute Tomasz S. OSIEJUK et al, ACTA ORNITHOLOGICA Vol. 42 (2007) No. 2 […]
Will the real Sykes’s Warbler please stand up? Breeding data support specific status forHippolais rama and H. caligata, with comments on the Arabian population of
Sykess Warbler (Iduna rama) Science Article 1 abstract In early-January 2000, one of us (GMK) received a communication from Michael Walters, the former Curator of Eggs at the Natural History Museum (Tring), concerning a recent short note by Castell (1999, see below) within these pages, in which a nest, apparently of Hippolais rama, was depicted. […]
JUVENILE AND ADULT SURVIVAL OF SWAINSON’S THRUSH (CATHARUS USTULATUS) IN COASTAL CALIFORNIA: ANNUAL ESTIMATES USING CAPTURE-RECAPTURE ANALYSES
Swainsons Thrush (Catharus ustulatus) Science Article 1 abstract We estimated annual rates of survival for juvenile and adult Swainson’s Thrushes (Catharus ustulatus) using capture-recapture analyses from 22 years of mist-netting data in coastal California (n = 2,651 individual captures). Our apparent survival estimate was 56% for adults and 25% for juveniles. We are the first […]
Documented Winter Records of Swainson’s Thrush in U.S.A. and Canada
Swainsons Thrush (Catharus ustulatus) Science Article 4 abstract Part of the documentation for an ‘out-of-season’ bird may be its being banded by a reputable bander. Since banding data often contribute to patterns of change in bird distribution, it might be advantageous to leave unverified records in the Bird Banding Laboratory’s database with a code indicating […]
An observation of attempted interspecific kleptoparasitism between two neotropical Tyrannid flycatchers
Sulphury Flycatcher (Tyrannopsis sulphurea) Science Article 1 abstract Kleptoparasitism, the interspecific and intraspecific stealing of already procured food, is well known among many taxa of birds (Brockmann & Barnard 1979), but has been reported only rarely in the avian family Tyrannidae. To my knowledge there are only two published observations of kleptoparasitism by tyrannid flycatchers, […]
Breeding Habits, Nestling Development, andVocalizations in the Summer Tanager
Summer Tanager (Piranga rubra) Science Article 3 abstract A pair of Summer Tanagers (Piranga rubra) nested near Zebulon, WakeCounty, N.C., in the spring of 1983. Nest contents were examined almost daily from 21May, the first day of incubation, through fledging of the young on 12 June. ELOISE F. POTTER, The Chat, 1985 Download article download […]
Time Of Departure by Summer Tanagers (Piranga rubra) from a Stopover Site Following Spring Trans-Gulf Migration
Summer Tanager (Piranga rubra) Science Article 1 abstract Nocturnal passerine migration typically commences within an hour of sunset and the bulk of migrants depart before the end of nautical twilight. FRANK R. MOORE AND DAVID A. ASORN, The Auk 113(4):949-952, 1996 Download article download full text (pdf)
AN OBSERVATION OF A SUMMER TANAGER ATTEMPTING TO EAT AN ANOLIS LIZARD
Summer Tanager (Piranga rubra) Science Article 2 abstract A Summer Tanager (Piranga rubra) was observed attempting to eat an anole (Anolis carolinensis) at a migratory stopover site. The event may reflect the importance ofbehavioral plasticity during migration, but might also be the result of a simple stimulus response mechanism. DANIEL FROEHLICH, J. Field Ornithol., 66(4):501-502, […]
Evidence for Wintering and Resident Populations of Swainson’s Flycatcher (Myiarchus Swainsoni) in Northern Suriname
Swainsons Flycatcher (Myiarchus swainsoni) Science Article 1 abstract Zimmer (1938: 408) was the first to demonstrate that the nominate subspecies of Swainsonss Flycatcher (Myiarchus s. swainsoni) of southeastern South America winters in northern South America. He based his demonstration upon specimens known to him from Guyana, Venezuela, and Colombia. Junge and Mees (1958: 106) later […]