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Рис. 1. Регион иссΛеΑований: A — его поΛожение на карте Восточной Азии; B — общий виΑ Буреинско-Хинганской низменности; C — карта-схема ΑебеΑинского стационара Хинганского заповеΑника. УсΛовные обозначения: I — Хинганский заповеΑник (вкΛючает Αва кΛастера); II — заказник «Ганукан». 1 — Антоновское воΑохраниΛище; 2 — оз. ΔоΛгое; 3 — оз. Гусиное; 4 — оз. Третье ΑебеΑиное Fig. 1. Study region: A — study region on the map of the East Asia; B — Burea-Khingan (Arkhara) lowland; C — Lebedinsky Station. Notes: I — two clusters of Khingan Nature Reserve; II — Ganukan Sanctuary. 1 — Antonovskoye Reservoir; 2 — Dolgoye Lake; 3 — Gusinoye Lake; 4 — Lebedinoye Lake in The results of long-term observation of waterfowl spring migration in Khingan Nature Reserve, Eastern Russia
Рис. 1. Регион иссΛеΑований: A — его поΛожение на карте Восточной Азии; B — общий виΑ Буреинско-Хинганской низменности; C — карта-схема ΑебеΑинского стационара Хинганского заповеΑника. УсΛовные обозначения: I — Хинганский заповеΑник (вкΛючает Αва кΛастера); II — заказник «Ганукан». 1 — Антоновское воΑохраниΛище; 2 — оз. ΔоΛгое; 3 — оз. Гусиное; 4 — оз. Третье ΑебеΑиное Fig. 1. Study region: A — study region on the map of the East Asia; B — Burea-Khingan (Arkhara) lowland; C — Lebedinsky Station. Notes: I — two clusters of Khingan Nature Reserve; II — Ganukan Sanctuary. 1 — Antonovskoye Reservoir; 2 — Dolgoye Lake; 3 — Gusinoye Lake; 4 — Lebedinoye Lake
Fig. 2. A in Gastrointestinal helminths of waterfowl (Anatidae: Anatinae) in the Lerma marshes of central Mexico: Some pathological aspects
Fig. 2. A. Proventriculus section of Oxyura jamaicensis showing a T. fissispina gravid female in the lumen of the glandular epithelium, surrounded by some giant cells (asterisk), lymphocytes and wrapped by a fibrous vascular connective tissue capsule (arrow) that displaces the proventriculus glands. Stained with H-E. B. Proventriculus of Mareca americana, showing multiple inflammatory foci consisting of lymphocytes and a few eosinophils. The cestode Gastrotaenia cygni can be observed on the glands' lumen. Stained with H-E. C. Anas acuta gizzard, where the presence of abundant nematodes (Epomidiostomun uncinatum and Amidostomum spp.) can be observed below the keratinized epithelium, surrounded by an abundant amount of mucus (asterisk) and hyperplasia of the mucus-producing cells (arrow). Stained with H-E. D. Gizzard of Anas crecca, where nematodes of the genus Amidostomum can be observed below the keratinized epithelium surrounded by an abundant amount of mucus (arrow). Stained with Masson's trichromic.
Fig. 1. A in Gastrointestinal helminths of waterfowl (Anatidae: Anatinae) in the Lerma marshes of central Mexico: Some pathological aspects
Fig. 1. A. Intestine of Anas crecca with a transparent nodule of 2 mm in diameter caused by Pseudocorynosoma constrictum penetrating the serosa. B. Proventriculus of Spatula discors with nodules (arrows): some of them whit Tetrameres sp. C. Gizzard of Mareca americana with hemorrhages (arrow) caused by the nematode Amidostomum spp. D. Gizzard of Mareca americana with a nodule of 1.5 × 2 cm in diameter and firm consistency, with the nematode Echinuria uncinata. E. Intestine of Anas crecca showing a nodule in the subserosa, containing the acanthocephalan Filicollis sp. in the intestinal lumen.
Fig. 6 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 6. The original holotype sternum of Proherodius oweni Lydekker (BMNH PAL 43164) in right lateral view. Scale bar is 10 mm.
Fig. 5 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 5. Additional fossil material referred to Headonornis hantoniensis (BMNH PAL 6240). A, right proximal humerus in caudal view; B, cranial view; C, referred distal end of left humerus in cranial view (BMNH PAL 5105). Characters based on the hypothesis of Ericson (1999) are labeled. Scale bars are 5 mm. Abbreviations as follows: a, incisura capitis humeri; b, impression of M. scapulohumeralis cranialis; c, tuberculum supracondylare ventrale; d, epicondylus dorsalis.
Fig. 7 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 7. Additional specimens pertaining to named fossil waterfowl taxa from the Eocene of England. A, BMNH PAL 4405 (cast of SMC C20949), left coracoid in dorsal aspect (specimen referred to Palaeopapia eous Harrison and Walker); B, BMNH PAL 4412, proximal right scapula in medial view (holotype of Palaeopapia hamsteadiensis Harrison and Walker); C, BMNH PAL 4407, proximal right coracoid in dorsal view (holotype of Paracygnopterus scotti Harrison and Walker). Scale bar is 10 mm.
Fig. 1 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 1. Parts of the holotype specimen of Anatalavis oxfordi Olson (BMNH PAL 5922). A, skull in lateral views; B, furcula; C, coracoid in dorsal and medial views. Scale bars are 10 mm. HYP indicates hypocleidium (apophysis furculae); FP, foramen pneumaticum.
Fig. 4 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 4. Some of the fossil material referred to Headonornis hantoniensis Harrison and Walker. A, holotype right coracoid in dorsal view (BMNH PAL 30325); B, referred distal end of left humerus in cranial view (BMNH PAL 5105); C, referred right humerus in caudal view (BMNH PAL 3686). Scale bars are 5 mm.
Fig. 3 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England
Fig. 3. Single tree (138 steps) resulting from reanalysis of Livezey (1997) and including the London Clay fossil Anatalavis (consistency index CI = 0.761; retention index RI = 0.815).
Figure 7. The strict consensus tree obtained from the parsimony analysis with 35 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 7. The strict consensus tree obtained from the parsimony analysis with 35 characters ordered. Support values above lines at each node show bootstrap> 50% and Bayesian credibility values> 70% (100% = *). Values below lines are numbers of unambiguous synapomorphies for each node. Clades A, B, and C are referred to in text and Table 4.
Figure 5 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 5. Left humeri of tadornines in caudal (A, B), cranial (C, D) and ventral (E, F) views: A, C, E, modern T. tadornoides SAM B.39591; and B, D, F, Australotadorna alecwilsoni (SAM P.43141). The arrow points to the planar caudoventral margin of the bicipital crest compared to the angled margin in Tadorna. Scale bar = 10 mm. See main text for abbreviations.
Figure 2 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 2. Referred elements of Pinpanetta tedfordi: A–C, right coracoid SAM P.23477 in A, ventral; B, dorsal; and C, medial aspect; D, left tibiotarsus UCMP 56999 in anterior view; and E, left tarsometatarsus SAM P.24004 in dorsal aspect. Scale bars = 10 mm. See main text for abbreviations.
Figure 6. Fossil tadornine bones compared with modern Tadorna tadornoides SAM B.39591 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 6. Fossil tadornine bones compared with modern Tadorna tadornoides SAM B.39591. Tadorna tadornoides: A,C. proximal right carpometacarpus; and H, dorsal view cranial half coracoid. Fossils referred to Australotadorna alecwilsoni: B, D, E, proximal right carpometacarpus; F, distal right tibiotarsus SAM P.36762 in anterior view; G, cranial part right coracoid (SAM P.24531) in dorsal aspect; I, cranial part right coracoid (SAM P.43137) in dorsal aspect. Fossils referred to an undetermined tadornine from Alcoota: J, left radius UCMP 65985 in dorsal aspect; and right carpometacarpus NT P.2913 in K, ventral; L, dorsal; and M, caudal views. Scale bars = 10 mm. See main text for abbreviations.
Figure 4 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 4. Referred elements of Pinpanetta fromensis: left carpometacarpus SAM P.42700 in: A, ventral; B, caudal; and C, dorsal aspects; D, right coracoid SAM P.41301 in dorsal aspect; and E, cranial part left coracoid MV P.222424 in dorsal aspect. Scale bars = 10 mm. See main text for abbreviations.
Figure 1 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 1. Right humeri of Pinpanetta species, A–E, cranial view, and F–J, caudal view. A, F, Pinpanetta tedfordi SAM P.41257, holotype; B, G, Pi. tedfordi UCMP 56998, paratype; C, D, H, I, Pi. vickersrichae SAM P.42703, holotype two nonarticulating fragments of one bone; and E, J, Pi. fromensis SAM P.43128, holotype. Scale bars = 10 mm. See main text for abbreviations.
Figure 3 in Descriptions and phylogenetic relationships of two new genera and four new species of Oligo-Miocene waterfowl (Aves: Anatidae) from Australia
Figure 3. Referred elements of Pinpanetta vickersrichae: A, left coracoid MV P.222418 in dorsal aspect; proximal left carpometacarpus AMNH 10770 in: B, ventral; C, caudal; and D, dorsal aspects; E, distal right tibiotarsus SAM P.24529, in anterior aspect. Scale bars = 10 mm. See main text for abbreviations.
Sixty-years of community-science data suggest earlier fall migration and short-stopping of several species of waterfowl in North America
<p>Worldwide, migratory phenology and movement of many bird species are shifting in response to anthropogenic climate and habitat changes. However, due to variation among species and a shortage of analyses, changes in waterfowl migration, particularly in the fall, are not well understood. Fall migration phenology and movement patterns dictate waterfowl hunting success and satisfaction, with cascading implications on economies and support for habitat management and securement. Using 60 years of band recovery data for waterfowl banded in the Canadian Prairie Pothole Region (PPR), we evaluated whether fall migration timing and/or distribution changed in Mallard (<em>Anas</em> <em>platyrhynchos</em>), Northern Pintail (<em>A. acuta</em>), and Blue-winged Teal (<em>Spatula</em> <em>discors</em>) between 1960 and 2019. We found that in the Midcontinent Flyways, Mallards and Blue-winged Teal migrated faster in more recent time periods, while Northern Pintail began fall migration earlier. In the Pacific Flyway, Mallards began fall migration earlier. Both Mallards and Northern Pintails showed evidence of short-stopping in the Midcontinent Flyways. Indeed, the Mallard and Northern Pintail distribution of band recovery data shifted 180 km and 226 km north respectively from 1960 to 2019. Conversely, Blue-winged Teal recovery distributions were consistent across years. Mallards and Northern Pintails also exhibited an increased proportion of band recoveries in the Pacific Flyway in recent decades. We provide clear evidence that the timing and routes of fall migration have shifted over the past six decades, but these phenological and spatial shifts differ among species. We suggest that using community-science data collected by hunters themselves to explain one of the group's major concerns (changes in duck abundance at traditional hunting grounds), within the environmental lens of climate change, may help lead to further engagement and two-way dialogue to support effective waterfowl management for these culturally and ecologically important species. </p>
Sixty-years of community-science data suggest earlier fall migration and short-stopping of several species of waterfowl in North America
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A hierarchical dependent double-observer method for estimating waterfowl breeding pairs abundance from helicopters
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Data from: Ecological and anthropogenic drivers of waterfowl productivity are synchronous across species, space, and time
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