A Mysterious Grassbird

Dear List,

My wife and I recently took a trip to the Top End. We did Darwin to
Kakadu to Pine Creek and back to Darwin. We saw about 60 “lifers” and
around 85 in total. For those interested in the total list we saw (some
of my favourites are: Black Bittern, Red-tailed Black Cockatoo, Hooded
Parrot, Northern Rosella, Partridge Pigeon), I included the complete
list at the end of the email!

However, I have a more pressing concern. There is a single bird we’re
having real trouble with. We saw a grassbird of some kind at Mamukala
wetlands:

jpolak.org/tmp/someGrassbird.jpg

I am not sure what it is (these grassbirds always give me trouble!).
After scouring the internet for dozens of pictures, I believe it is a
female Rufous Songlark. Can anyone help me with this? The picture isn’t
the greatest quality but I believe it shows quite a few identification
features, and is the only one I got.

Most Sincerely,
Jason

List of birds for top end trip:

1 Arafura Fantail
2 Australasian Darter
3 Australian Figbird
4 Australian Pelican
5 Australian White Ibis
6 Australian Wood Duck
7 Azure Kingfisher
8 Bar-shouldered Dove
9 Black Bittern
10 Black Kite
11 Black-faced Cuckoo-shrike
12 Black-necked Stork
13 Blue-faced Honeyeater
14 Blue-winged Kookaburra
15 Brolga
16 Brown Honeyeater
17 Brush Cuckoo
18 Chestnut-quilled Rock Pigeon
19 Cockatiel
20 Comb-crested Jacana
21 Crimson Finch
22 Double-barred Finch
23 Eastern Curlew
24 Forest Kingfisher
25 Galah
26 Glossy Ibis
27 Great Bowerbird
28 Great Egret
29 Green Pygmy Goose
30 Grey-crowned Babbler
31 Helmeted Friarbird
32 Hooded Parrot
33 Intermediate Egret
34 Large-billed Gerygone
35 Leaden Flycatcher
36 Lemon-bellied Flycatcher
37 Little Corella
38 Little Friarbird
39 Little Pied Cormorant
40 Long-tailed Finch
41 Magpie Goose
42 Magpie-Lark
43 Masked Finch
44 Masked Lapwing
45 Nankeen Night Heron
46 Northern Rosella
47 Orange-footed Scrubfowl
48 Orange-footed Scrubfowl
49 Partridge Pigeon
50 Peaceful Dove
51 Pheasant Coucal
52 Pied Butcherbird
53 Pied Heron
54 Pied Stilt
55 Pink Eared Duck
56 Plumed Whistling Duck
57 Purple Swamphen
58 Radjah Shelduck
59 Rainbow Bee-eater
60 Red-backed Kingfisher
61 Red-capped Plover
62 Red-collared Lorikeet
63 Red-headed Honeyeater
64 Red-tailed Black Cockatoo
65 Red-winged Parrot
66 Royal Spoonbill
67 Rufous Owl
68 Rufous Whistler
69 Sacred Kingfisher
70 Shining Flycatcher
71 Silver Gull
72 Spangled Drongo
73 Straw-necked Ibis
74 Sulphur-crested Cockatoo
75 Torresian Crow
76 Torresian Imperial Pigeon
77 Varied Triller
78 Wandering Whistling Duck
79 Whistling Kite
80 White-bellied Cuckoo-shrike
81 White-bellied Sea Eagle
82 White-breasted Woodswallow
83 White-gaped Honeyeater
84 White-throated Honeyeater
85 Willie Wagtail