google検索で画像のスクレイピングをしたい

実現したいこととエラー

スクレイピングで鳥の画像を集めたいと思い、コードを調べて書いたのですが、
「Begining searching bird
-> No more images
-> Found 0 images

Complete downloaded
└─ Failed to download 0 images」

となってしまい、画像が集められません。何が原因なのか調べても全く分からなかったので質問させていただきました。

該当のソースコード

import
1import json
2import os
3import urllib
4
5from bs4 import BeautifulSoup
6import requests
7
8
9class Google(object):
10    def __init__(self):
11        self.GOOGLE_SEARCH_URL = "https://www.google.co.jp/search"
12        self.session = requests.session()
13        self.session.headers.update(
14            {
15                "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:10.0) \
16                    Gecko/20100101 Firefox/10.0"
17            }
18        )
19
20    def search(self, keyword, maximum):
21        print(f"Begining searching {keyword}")
22        query = self.query_gen(keyword)
23        return self.image_search(query, maximum)
24
25    def query_gen(self, keyword):
26        # search query generator
27        page = 0
28        while True:
29            params = urllib.parse.urlencode(
30                {"q": keyword, "tbm": "isch", "ijn": str(page)}
31            )
32
33            yield self.GOOGLE_SEARCH_URL + "?" + params
34            page += 1
35
36    def image_search(self, query_gen, maximum):
37        results = []
38        total = 0
39        while True:
40            # search
41            html = self.session.get(next(query_gen)).text
42            soup = BeautifulSoup(html, "lxml")
43            elements = soup.select(".rg_meta.notranslate")
44            jsons = [json.loads(e.get_text()) for e in elements]
45            image_url_list = [js["ou"] for js in jsons]
46
47            # add search results
48            if not len(image_url_list):
49                print("-> No more images")
50                break
51            elif len(image_url_list) > maximum - total:
52                results += image_url_list[: maximum - total]
53                break
54            else:
55                results += image_url_list
56                total += len(image_url_list)
57
58        print("-> Found", str(len(results)), "images")
59        return results
60
61
62def main():
63    parser = argparse.ArgumentParser(argument_default=argparse.SUPPRESS)
64    parser.add_argument("-t", "--target", help="target name", type=str, required=True)
65    parser.add_argument(
66        "-n", "--number", help="number of images", type=int, required=True
67    )
68    parser.add_argument(
69        "-d", "--directory", help="download location", type=str, default="./data"
70    )
71    parser.add_argument(
72        "-f",
73        "--force",
74        help="download overwrite existing file",
75        type=bool,
76        default=False,
77    )
78
79    args = parser.parse_args()
80
81    data_dir = args.directory
82    target_name = args.target
83
84    os.makedirs(data_dir, exist_ok=True)
85    os.makedirs(os.path.join(data_dir, target_name), exist_ok=args.force)
86
87    google = Google()
88
89    # search images
90    results = google.search(target_name, maximum=args.number)
91
92    # download
93    download_errors = []
94    for i, url in enumerate(results):
95        print("-> Downloading image", str(i + 1).zfill(4), end=" ")
96        try:
97            urllib.request.urlretrieve(
98                url,
99                os.path.join(*[data_dir, target_name, str(i + 1).zfill(4) + ".jpg"]),
100            )
101            print("successful")
102        except BaseException:
103            print("failed")
104            download_errors.append(i + 1)
105            continue
106
107    print("-" * 50)
108    print("Complete downloaded")
109    print("├─ Successful downloaded", len(results) - len(download_errors), "images")
110    print("└─ Failed to download", len(download_errors), "images", *download_errors)
111
112
113if __name__ == "__main__":
114    main()